baber/WOPTO huggingface dataset:
Patent JP-WO2017221978-A1 (JP)
Title: 藻類育成資材
IPC: A01G33/00
Filed: 2017-06-21
Abstract: 【課題】腐植酸を含有する鉄錯体とその製造方法を提供する。 【解決手段】本発明に係る腐植酸は堆肥などから抽出される天然の腐植酸と異なり、工業的に安定的に製造可能である。腐植酸は若年炭の硝酸酸化物で、海水中でも安定な鉄錯体となる。さらに限外ろ過によって１０ｋＤａ以上３０ｋＤａ未満で分画された腐植酸画分が藻類に対し活性が高い事が判明した。この腐植酸画分との鉄錯体は、ワカメなどの海産藻類に対して生育促進効果を有し、沿岸域の養殖等で使用可能である。また、陸上での海産養殖の場面でも利用可能である。これらの技術により、省資源での養殖技術の普及が考えられ、産業上の利点がある。 【選択図】なし
Patent JP-WO2019058463-A1 (JP)
Title: 表示装置および表示装置の駆動方法
IPC: G02F1/1368
Filed: 2017-09-20
Abstract: 実施形態の表示装置は、基板の上にマトリクス状に設けられていて各々が液晶表示素子および有機ＥＬ表示素子を備えている複数の画素を備え、有機ＥＬ表示素子は、液晶表示素子の画素電極および対向電極と電気的に分離してそれぞれ形成された陽極および陰極を備え、複数の画素の各々は、第一バスラインの電位に基づいて有機ＥＬ表示素子に供給される電流の大きさを変化させる第一トランジスタと、第三バスラインの電位に基づいて第一バスラインと画素電極とを電気的に分離する第二トランジスタと、第二バスラインの電位に基づいて、第一トランジスタおよび第二トランジスタと第一バスラインとを電気的に接続する第三トランジスタとを備えている。実施形態の表示装置の駆動方法は、液晶表示素子による表示から有機ＥＬ表示素子による表示への切り換えにおいて、第二トランジスタをオフ状態にする前に画素電極と対向電極との間の電位差を減少させる。
Patent JP-WO2018051805-A1 (JP)
Title: フィルム搬送装置及びフィルム製造方法
IPC: B65H23/32
Filed: 2017-08-31
Abstract: 開口から噴出する流体によってフィルムを搬送面から浮遊させた状態で、フィルムを連続的に搬送するターンバーであって、搬送面が、曲面と、上向きの上平面と、下向きの下平面と、を含む、ターンバー；並びに、ターンバーの上流に設けられ、ターンバーの曲面側の縁部とフィルムの一方の縁部とがフィルム外になす角度が、ターンバーの曲面側の縁部とフィルムの他方の縁部とがフィルム外になす角度よりも、大きくなるように、ターンバーにフィルムを供給する、フィルム供給装置；を備え、ターンバーの上平面を搬送されるフィルムの一方の縁部での浮遊量が、他方の縁部での浮遊量よりも大きい、フィルム搬送装置。
Patent JP-WO2018151256-A1 (JP)
Title: 電動車両駆動装置
IPC: F16H3/72
Filed: 2018-02-16
Abstract: 電動車両駆動装置は、第１モータと、第２モータと、第１モータ及び第２モータに連結されており且つ減速比を切り替えることができる変速機構と、を備える。変速機構は、第１モータに連結されるサンギアシャフトを備える。第１モータは、第１ステータコアと、第１ステータコアの径方向外側に配置された第１ロータコアと、第１ロータコア及びサンギアシャフトを連結する第１ロータ保持部材と、を備える。
Patent JP-WO2018110297-A1 (JP)
Title: 組成物
IPC: C08G59/68
Filed: 2017-11-30
Abstract: 露光量の変化に対して形状変化が少ない組成物を提供することを課題とする。カチオン重合性化合物（Ａ）、光酸発生剤（Ｂ）及び熱酸発生剤（Ｃ）を含有する組成物。カチオン重合性化合物（Ａ）がエポキシ化合物であることが好ましい。また、光酸発生剤（Ｂ）が、芳香族スルホニウム塩であることも好ましい。また、光酸発生剤（Ｂ）と、熱酸発生剤（Ｃ）との質量比が、前者：後者で、１００：０．００００１〜１００：５であることも好ましい。
Patent JP-WO2019059302-A1 (JP)
Title: 安定性に優れるテリパラチド含有液状医薬組成物
IPC: A61K47/18
Filed: 2018-09-20
Abstract: 本発明によれば、物性の観点で優れているテリパラチド又はその塩の液状医薬製剤として、テリパラチド又はその塩、及び、少なくとも１種以上の無機塩及び／又は有機塩を含有する液状医薬製剤が提供される。
Patent JP-WO2018123190-A1 (JP)
Title: サーバ装置、情報管理方法、情報処理装置、情報処理方法およびプログラム
IPC: G06F21/62
Filed: 2017-10-05
Abstract: 【課題】匿名情報が漏洩した場合であっても、漏洩した匿名情報がどのユーザに関連するのかを特定しにくくする技術が提供されることが望ましい。【解決手段】ユーザの匿名情報が漏洩した場合におけるリスク値を取得するリスク値取得部と、前記匿名情報に前記匿名情報を識別するための匿名ＩＤを関連付ける処理実行部と、を備え、前記処理実行部は、前記リスク値が所定の閾値を超える場合、前記匿名情報に関連付けられる匿名ＩＤを切り替える処理、および、前記匿名情報の分割によって得られる複数の分割情報それぞれに対して関連付けられる匿名ＩＤを異ならせる処理の少なくともいずれか一方を実行する、サーバ装置が提供される。【選択図】図１
Patent JP-WO2018168487-A1 (JP)
Title: 植毛加工用水性樹脂組成物及び植毛加工品
IPC: C08J7/043
Filed: 2018-03-01
Abstract: カルボキシル基を有する重合体（Ａ）が、金属水酸化物（ｂ１）を必須成分とする塩基性化合物（Ｂ）で中和されたアクリル樹脂（Ｃ）と、ポリオキサゾリン化合物（Ｄ）と、水性媒体（Ｅ）とを含有することを特徴とする植毛加工用水性樹脂組成物を提供する。この植毛加工用水性樹脂組成物は、経時安定性に優れるとともに、植毛強度及び基材密着性に優れる植毛加工品が得られることから、種々の植毛加工品に好適に用いることができる。
Patent JP-WO2018151102-A1 (JP)
Title: モータおよびポンプ装置
IPC: H02K5/08
Filed: 2018-02-13
Abstract: ステータを覆う樹脂封止部材とカバー部材との接合構造の簡素化および樹脂封止部材に対するカバー部材の位置精度の向上を図ること。ポンプ装置１のモータ２は、ステータ１１を覆う樹脂封止部材１３と、樹脂封止部材１３を出力側Ｌ１から被うカバー部材１４を備える。カバー部材１４と樹脂封止部材１３は、軸線Ｌ方向に当接して位置決めされる部位と、接着剤により固定される部位とが別々の部位であるため、樹脂封止部材１３に対するカバー部材１４の位置精度が高い。また、接着剤で固定できるため、固定箇所の構造を簡素化することができる。カバー部材１４は、環状のカバー部材側固定面７２の内周側に肉抜き形状を兼ねた第１接着剤溜まり部１００が設けられている。従って、はみ出した接着剤を保持でき、接着剤の塗布量のコントロールを厳密に行う必要がない。
Patent WO-2019146438-A1 (WO)
Title: Battery pack
Inventor: SHIMIZU KEISUKE
IPC: H01M10/658
Filed: 2019-01-15
Abstract: This battery pack comprises first and second battery modules which are arranged side by side in a first direction within a pack case. A first heat transfer part and a first heat insulation member are arranged between cells of the first battery module, said cells being adjacent to each other in a second direction that is perpendicular to the first direction; and a second heat transfer part and a second heat insulation member are arranged between cells of the second battery module, said cells being adjacent to each other in the second direction. The first heat transfer part is formed in a part of a heat transfer member that is connected to bridge the first battery module and the second battery module, and is connected to the cells of the first battery module in a heat transferable manner. The second heat transfer part is formed in another part of the heat transfer member, and is connected to the cells of the second battery module in a heat transferable manner.
Patent WO-2019159757-A1 (WO)
Title: Modified vinyl alcohol polymer and production method therefor
Inventor: NII SHINSUKE
IPC: C08F8/36
Filed: 2019-02-05
Abstract: Provided are: a modified vinyl alcohol polymer that has a sulfonate group or a salt thereof, and has significantly improved water-solubility compared to that of a vinyl alcohol polymer before modification; and a production method for the modified vinyl alcohol polymer. This modified vinyl alcohol polymer (A) has a sulfonate group or a salt thereof as a side chain thereof, wherein the level of modification of the sulfonate group or the salt is 0.01-10 mol%, and the block character of the remaining vinyl ester units is 0.55-1.
Patent WO-2019181308-A1 (WO)
Inventor: YAGI YOSHITAKA
IPC: G02F1/1337
Filed: 2019-02-15
Abstract: The silane-coupling material according to an embodiment of the present disclosure is represented by general formula (1), and has hydrocarbon groups having different numbers of carbon atoms at A and B.
Patent WO-2019160137-A1 (WO)
Title: Luminous flux control member, light emission device, and illumination device
Inventor: SEKI AKINOBU
IPC: F21V5/02
Filed: 2019-02-18
Abstract: This luminous flux control member has: an incident surface; two reflection surfaces that reflect some of the light incident on the incident surface in mutually opposite directions that are substantially perpendicular to the light axis of a light emission element; and two emission surfaces disposed facing each other sandwiching the two reflection surfaces. The incident surface has: a first incident surface that intersects with the light axis of the light emission element; and two second incident surfaces that sandwich the first incident surface and are disposed in a Y-axis direction that the two emission surfaces face. A plurality of first projecting ridges having ridgelines that are substantially parallel to the Y-axis direction are disposed on the first incident surface. A plurality of second projecting ridges having ridgelines that are substantially parallel to the light axis are disposed on the two emission surfaces, or a plurality of third projecting ridges having ridgelines that are substantially intersecting with the first projecting ridges are disposed on at least a part of the two reflection surfaces.
Patent WO-2019189746-A1 (WO)
Title: Heat dissipating sheet, heat dissipating member, and semiconductor device
Inventor: SAWAMURA TOSHIYUKI
IPC: C08K3/013
Filed: 2019-03-29
Abstract: The present invention provides a heat dissipating sheet and a heat dissipating member which have high heat conductivity and insulation property. A heat dissipating sheet 10 comprises cohesive inorganic fillers 1 having a breaking strength of 20 MPa or less and an elastic modulus of 48 MPa or more, and a matrix resin 2, wherein equal to or more than half of the cohesive inorganic fillers 1 in the heat dissipating sheet 10 satisfy the following conditions A, B, and the cohesive inorganic fillers satisfying the following conditions A, B satisfy the following condition C or D. Condition A: The cohesive inorganic fillers are in surface contact with each other. Condition B: The aspect ratio is more than 1 and equal to or less than 2. Condition C: Among triangles formed with a straight line formed by a contact interface between the cohesive inorganic fillers as one side, and the centers of virtual circles of the cohesive organic fillers as apexes, a sum total S t  of the areas of triangles having an angle θ 1  of 30 degrees or more, which is formed by connecting both ends of the straight line and each of the apexes, is 20% or more with respect to a sum total S h  of the cross-sectional areas of the cohesive inorganic fillers. Condition D: the sum total S h  is 90% or less with respect to a sum total S v  of the areas of the virtual circles of the cohesive inorganic fillers.
Patent WO-2020202341-A1 (WO)
Inventor: OTAKA MASARU
IPC: H04W16/26
Filed: 2019-03-29
Abstract: Provided is a mobile relay device for relaying communication between a wireless base station and a communication terminal, wherein the relay device comprises an information transmission unit for transmitting, to a communication terminal for which a wireless communication connection with the relay device has been established, handover destination information that indicates a handover destination to which radio waves received by the communication terminal are handed over without performing a radio wave measurement report.
Patent WO-2020202478-A1 (WO)
Inventor: TAKEDA KAZUKI
IPC: H04W72/12
Filed: 2019-04-02
Abstract: This user terminal comprises: a control unit which when a first uplink resource for first uplink information associated with a first traffic type and a second uplink resource for second uplink information associated with a second traffic type are overlapped in time, determines at least one piece of uplink information among the first uplink information and the second uplink information, and one among the first uplink resource and the second uplink resource; and a transmission unit which transmits the uplink information by using the uplink resource. According to an aspect of the present disclosure, it is possible to appropriately handle collisions of a plurality of uplink transmissions respectively associated with different traffic types.
Patent WO-2019198737-A1 (WO)
Title: Transaction system, transaction processing device, currency processing device, and transaction method
Inventor: TANAKA KOJI
IPC: G06Q40/02
Filed: 2019-04-10
Abstract: To reduce a processing burden on a teller in a branch of a financial institution, etc., and effect a reduction in the number of tellers, when a transaction processing device 10 accepts an input of content of a deposit slip (S11), and a currency processing device 20 accepts a deposit of currency (S12), the currency processing device 20 identifies the amount of the deposit and notifies the transaction processing device 10 of the amount (S13). Upon being notified by the currency processing device 20 of the amount of the deposit corresponding to the amount having been inputted as the content of the deposit slip, the transaction processing device 10 transmits, to a financial system server 40, a request for deposit to be performed by network banking (S14). The financial system server 40 receives the request for deposit from the transaction processing device 10 and executes a deposit process (S15). The currency processing device 20 updates the account of balance therein in accordance with the deposit, and causes an update of the balance managed by a currency management device 30 (S16).
Patent WO-2020208767-A1 (WO)
Title: Converter furnace equipment
Inventor: SASAKI NAOTO
IPC: C21C5/36
Filed: 2019-04-11
Abstract: This converter furnace equipment comprises: a first electrode disposed so that the distal end thereof is immersed in slag generated above a molten iron alloy bath in a converter furnace; a second electrode disposed so as to contact the molten iron alloy bath or the slag; a power device that supplies DC current to the first electrode and the second electrode via the slag; and a control device that controls the DC current so that the current does not exceed a pre-set maximum output current.
Patent WO-2019203363-A1 (WO)
Inventor: AOKI TAKURO
IPC: B23K11/24
Filed: 2019-04-19
Abstract: 複数のアルミニウム材を重ね合わせて一対の電極で挟み込み、前記電極間に第１の通電を行う予備通電工程と、予備通電工程後の１０～５００ｍｓの間、複数のアルミニウム材への入熱量を低下させる冷却工程と、冷却工程後、一対の電極間に第２の通電を行う本通電工程と、をこの順に実施する。予備通電工程の電流値をＩ 1 、通電時間をＴ 1 、本通電工程の電流値をＩ ２ 、通電時間をＴ ２ としたとき、Ｉ １ ×Ｔ １ ＜Ｉ ２ ×Ｔ ２ の関係を満たすようにする。
Patent WO-2020217392-A1 (WO)
Title: Gas insulated busbar
Inventor: NABEKURA KOHEI
IPC: H02G5/06
Filed: 2019-04-25
Abstract: A gas insulated busbar (10) comprising: a container (2) having a first flange (6) and being a first container constituting an enclosed space in which insulating gas is filled; a container (3) having a second flange (7) joined to the first flange (6) and being a second container constituting an enclosed space together with the first container; a conductor (1) housed in the enclosed space; and an insulating support (5) supporting the conductor (1) in the enclosed space. Part of the second flange (7) is an inner flange (7a) that has an attachment seat (8) to which the insulating support (5) is attached. A protrusion (11) that protrudes towards the opposite side to the central axis side of the conductor (1) is provided in a section of the second container in which the inner flange (7a) is provided.
Patent WO-2019225566-A1 (WO)
Inventor: KONDOW MASAHIKO
IPC: H01S5/026
Filed: 2019-05-21
Abstract: 光集積回路（１０４）は、光導波路（２０３又は２０４）と、光導波路（２０３又は２０４）の側方に形成されており、電気信号を光信号に変換し、当該光信号を光導波路（２０４）に出力する、又は、光導波路（２０３）を伝送される光信号を電気信号に変換するレーザダイオード（２０２）又はフォトダイオード（２０１）とを備え、レーザダイオード（２０２）又はフォトダイオード（２０１）は、フォトニック結晶構造体に囲まれた円形の主共振器（４０１）と、主共振器（４０１）の近傍に形成され、フォトニック結晶構造体に囲まれた副共振器（４０２）とを有する。
Patent WO-2020174709-A1 (WO)
Inventor: YAMADA KIKUO
IPC: D04H1/732
Filed: 2019-06-07
Abstract: Provided are a non-hydrolysable fiber sheet for which environmental considerations have been made and which combines strength with softness, and a production method therefor.　The invention contains a fiber material of natural origin, is non-hydrolysable, and comprises: a base paper sheet formed through the airlaid procedure; a naturally degradable binder impregnating the base paper sheet, for the purpose of binding the fiber material of natural origin; and a naturally degradable cross-linking agent impregnating the base paper sheet, for the purpose of cross-linking the binder to one another. The invention is formed by performing heating in a state wherein the base paper sheet has been impregnated with at least the cross-linking agent.
Patent WO-2020009033-A1 (WO)
Title: Reinforcing member for structural member for vehicle
Inventor: KOSAKA HIROYASU
IPC: B21D22/20
Filed: 2019-06-28
Abstract: Provided is a reinforcing member for structural member for vehicle. The reinforcing member is positioned in the internal space of a structural member for vehicle having a closed cross section, is joined by welding to the structural member for vehicle, has a curved portion in at least one part in the longitudinal direction, has a top plate, and a pair of vertical walls which extend from ridgelines on both edges of the top plate, and is formed in an open-ended rectangle shape. The vertical walls are provided with a plurality of protrusions for welding, having a bearing surface for welding at intervals when viewed in the longitudinal direction. The protrusions for welding protrude from the base surface of the vertical walls towards the structural member for vehicle, and a bead that prevents or curbs the occurrence of wrinkles during press-molding is formed on the vertical walls in the curved part, between the protrusions for welding. The bead protrudes from the base surface of the vertical walls towards the structural member for vehicle.
Patent WO-2020026986-A1 (WO)
Title: Information processing device, information processing method, and program
Inventor: SUGIHARA KENJI
IPC: G06F3/0481
Filed: 2019-07-26
Abstract: There is a desire for the provision of a technology capable of offering a proposal to a user, while reducing a feeling of discomfort imparted to the user. Provided is an information processing device (10) provided with: an action information acquiring unit (121) for acquiring action information of a user; a proposal information acquiring unit (122) for acquiring, on the basis of the action information, proposal information for the user, related to the environment in the vicinity of the user at the time the action information was acquired; and a display control unit (129) for controlling a display device, on the basis of the proposal information, in such a way as to display an avatar object which performs an action corresponding to the proposal information, in the field of view of the user.
Patent WO-2021024310-A1 (WO)
Inventor: YUKAWA HIDENORI
IPC: H01P1/161
Filed: 2019-08-02
Abstract: A polarization coupler (1) is provided with: a common wave guide tube (10) that has a short-circuited end (10q) and a input/output terminal (10p) and that has a wave guide space (10h) for allowing transmission of a first polarized wave and a second polarized wave orthogonal to each other; a first rectangular wave guide tube (20) that is connected to the lateral wall of the common wave guide tube (10) and that extends in a first direction intersecting with the tube axis (Ax) direction; and a second rectangular wave guide tube (30) that is connected to the lateral wall of the common wave guide tube (10) and that extends in a second direction intersecting with the tube axis (Ax) direction. The short-circuited end (10q) has a base end portion (10qb) that forms a surface orthogonal to the tube axis (Ax) direction. The first rectangular wave guide tube (20) has a pair of wide wall surfaces that are inclined at an angle of 45 degrees with respect to the base end portion (10qb) on a surface perpendicular to the first direction, whereas the second rectangular wave guide tube (30) has a pair of wide wall surfaces that are inclined at an angle of 45 degrees with respect to the base end portion (10qb) on a surface perpendicular to the second direction.
Patent WO-2021028992-A1 (WO)
Inventor: MURATA NAOYA
IPC: H04W36/24
Filed: 2019-08-09
Abstract: This terminal (200) comprises: a first receiver (220) which receives setting information on a transition destination cell (gNB100C) from a first cell (gNB100A) through conditional cell transition, in the first cell (gNB100A) in which the terminal (200) is located; a second receiver (220) which receives a message indicating that the transition destination cell (gNB100C) is shared with a second cell (gNB100B); and a control unit (240) which, when the terminal (200) transitions from the first cell (gNB100A) to the second cell (gNB100B) on the basis of the message, uses setting information on the transition destination cell (gNB100C), in the second cell (gNB100B).
Patent WO-2020054580-A1 (WO)
Title: Breaker device
Inventor: FUKUDA YOSHIHISA
IPC: H01H9/32
Filed: 2019-09-05
Abstract: The purpose of the present disclosure is to provide a breaker device that improves reliability relating to the breaking performance of an electric circuit. This breaker device (1) operates in the sequence of a first state, a second state, and a third state. The first state is a state in which movement of a movable member (5) is regulated by a regulating unit (20), and a movable contact point (51) of the movable member (5) and a fixed contact point (31) of a fixed member (3) are in contact. The second state includes at least one of: a state in which the movable member (5) is moved in a direction away from the fixed member (3) in resistance to the holding force of the regulating unit (20) that maintains a state of contact of the movable contact point (51) with the fixed contact point (31); or a state in which the regulation of the movement of the movable member (5) by the regulating unit (20) is canceled. The third state is a state in which an operation pin (8) is inserted between the fixed contact point (31) and the movable contact point (51), and between the fixed contact point (31) and the movable contact point (51) is electrically insulated by the operation pin (8).
Patent WO-2020188856-A1 (WO)
Inventor: SANO SATOSHI
IPC: A61B6/00
Filed: 2019-09-06
Abstract: このＸ線イメージング装置（１００）は、複数のＸ線スキャン画像（１０）のモアレ縞に重畳したＸ線の減衰に起因する明暗のグラデーションを除去するとともに、グラデーションが除去された複数のＸ線スキャン画像（１０）と複数のモアレ画像（１１）の位相情報とに基づいて位相コントラスト画像を生成する画像処理部（７）を備える。
Patent WO-2020066864-A1 (WO)
Inventor: KATA YOSHIHITO
IPC: F28F25/04
Filed: 2019-09-20
Abstract: A water-spraying cooling device equipped with a spraying device (20) for spraying water from an upstream side in a predetermined blowing direction toward a heat exchanger (13) that carries out an exchange of heat between air flowing in the blowing direction and a heat medium circulating in the interior of the heat exchanger, wherein the spraying device (20) includes supply holes (206) for supplying the water to be sprayed to the heat exchanger (13), and guide parts (207, 208) that are formed so as to extend downward in the gravity direction from the supply holes (206) and that guide the water supplied from the supply holes (206).
Patent WO-2020085243-A1 (WO)
Inventor: SUGISHITA SUGURU
IPC: B62D1/19
Filed: 2019-10-18
Abstract: A structure is realized in which the sliding resistance in the axial direction between an inner column and an outer column can easily be contained within an appropriate range. The present invention comprises: the inner column 24; the outer column 25; and a column side bracket 26 fixed by welding to the outer circumferential surface of the outer column 25. The outer column 25 has a front-side small-diameter cylindrical part 37 that is a press-fitted part into which the inner column 24 is press-fitted on the inner-diameter side. The inner circumferential surface of the front-side small-diameter cylindrical part 37 and the outer circumferential surface of the inner column 24 contact in a state having a fastening margin, directly, or via another member, in only a plurality of contact locations separated in the circumferential direction. In the column side bracket 26, at least one location in the axial direction is welded to the outer circumferential surface of the front-side small-diameter cylindrical part 37 in only two weld locations that are close in the circumferential direction.
Patent WO-2020085284-A1 (WO)
Title: Curable resin composition and cured product
Inventor: TAMAGAWA TOMOKAZU
IPC: C08F2/48
Filed: 2019-10-21
Abstract: This curable resin composition contains a radical-polymerizable compound. When the curable resin composition is coated using an air dispenser, irradiated with ultraviolet rays having a wavelength of 365 nm using an LED lamp at an irradiation dose of 1000 mJ/cm 2  and then left for 16 hours in an environment having a temperature of 25ºC and a relative humidity of 50%, the ratio of coating height to line width is 0.6 or more. When a load of 0.03 MPa is applied after irradiation with ultraviolet rays having a wavelength of 365 nm using an LED lamp at an irradiation dose of 1000 mJ/cm 2 , the degree of change in thickness following the load application is 40% or less.
Patent WO-2020100573-A1 (WO)
Inventor: SEKIYA MASATOSHI
IPC: A61Q17/04
Filed: 2019-10-29
Abstract: The present invention addresses the problem of providing a water-in-oil composition that has a good usability, e.g., lacks stickiness, and imparts an excellent uniformity, water resistance, and stability over time to a coating film. The water-in-oil composition that has solved the problem comprises the following components (A) to (D): component (A) 5 to 30 mass% of zinc oxide surface-treated with a hydrophobing agent and silica; component (B) a polar oil; component (C) a silicone oil; and component (D) water, wherein component (A), when mixed at 0.25 mass% in a water/ethanol solvent (mass ratio of water : ethanol = 3 : 1), exhibits a transmittance for light at a wavelength of 700 nm of 0.8 to 20. The water-in-oil composition is characterized by having a surfactant content of not more than 1 mass%.