Question: Dyson is a well-known maker of ring-shaped bladeless fans, but which Japanese company invented them, in 1981?

Context articles: Princess Maker 2
Transformers (toy line)
Bladeless fan
Dyson (company)
Kodak (disambiguation)
Spam Cube
List of Dyson products
Zeng Chengwei
Edison's Phonograph Doll
Funyuns

Princess Maker 2 is the second installment in the Princess Maker series of life simulation games developed by the Japanese company Gainax.
 It has been translated into English, Korean, and Chinese.
The Transformers (トランスフォーマー , Toransufōmā ) is a line of toys produced by the American toy company Hasbro and Japanese company Takara (now known as Takara Tomy) The Transformers toyline was created from toy molds mostly produced by Japanese company Takara in the toylines Diaclone and Microman.
 Other toy molds from other companies such as Bandai were used as well.
 In 1984, Hasbro bought the distribution rights to the molds and rebranded them as the Transformers for distribution in North America.
 The designs for the original 28 figures were made by Kojin Ono, Takashi Matsuda, Hideaki Yoke, Hiroyuki Obara, and Satoshi Koizumi.
 Hasbro would go on to buy the entire toy line from Takara, giving them sole ownership of the Transformers toy-line, branding rights, and copyrights, while in exchange, Takara was given the rights to produce the toys and the rights to distribute them in the Japanese market.
 The premise behind the Transformers toyline is that an individual toy's parts can be shifted about to change it from a vehicle, a device, or an animal, to a robot action figure and back again.
 The taglines "More Than Meets The Eye" and "Robots In Disguise" reflect this ability.
A bladeless fan (sometimes called an air multiplier) blows air from a ring with no external blades.
 Its blades are hidden in its base.
 The first concept was created by Toshiba in 1981.
 Dyson claims that its bladeless fans (U.S. Patent  ) produce a more constant airflow than traditional fans.
Dyson Ltd. is a British technology company established by James Dyson in 1987.
 It designs and manufactures household appliances such as vacuum cleaners, hand dryers, bladeless fans, heaters and hair dryers.
 Dyson employs more than 7,000 people worldwide.
Eastman Kodak is a well-known maker of photo and printing products.
Spam Cube, Inc was a high-tech startup company based in the midtown area of New York City.
 The company invented and manufactured the Spam Cube, a SaaS (Security As A Service) network security hardware device for consumers that blocked spam e-mail, computer viruses and phishing.
 The company invented a SaaS delivery platform technology that enables any home networking embedded device such as a Broadband cable modem, DSL modem, Wireless router or Femtocell to offer network Security As A Service technology that blocks spam e-mail, computer viruses and phishing.
 The Spam Cube SaaS platform gave the consumer the choice to select spam e-mail, computer viruses, and phishing blocking technology that was powered by either McAfee or Symantec managed enterprise Security As A Service technology.
Dyson is a British-based company and manufacturer of bagless vacuum cleaners (using cyclonic separation and brushless electric motors), heatless hand dryers, bladeless fans/heaters, and robotic vacuum cleaners.
Zeng Chengwei (曾成偉) (b. 1958) is a Chinese musician of the guqin, born in the Sichuan province of China.
 He is a sixth-generation transmitter (counting from Zhang Kongshan) of the Shu school (蜀派; sometimes called the "Chuan" School (川派)) of qin music, having studied with his maternal grandfather, Yu Shaoze.
 Zeng is also a well-known maker of the instrument.
Edison's Phonograph Doll is a children's toy doll developed by the Edison Phonograph Toy Manufacturing Company (founded by William W. Jacques and Lowell Briggs in 1887) introduced in 1890.
 The original doll was invented by Thomas Edison in 1877.
 The 22-inch doll featured a removable phonograph that played a single nursery rhyme.
 Although it had spent several years in experimentation and development, the Edison Talking Doll was a sales failure, and was only marketed for a few short weeks in early 1890.
 You had to crank a handle each time for it to play.
 Also, the ring-shaped wax records wore out quickly, and were prone to warping and cracking.
Funyuns is the brand name of an onion-flavoured corn snack introduced in the United States in 1969 and invented by Frito-Lay employee George Bigner.
 Funyuns consist primarily of cornmeal, ring-shaped using an extrusion process, representing the shape and texture of fried onion rings.
 A salt and onion mix gives them the flavor.
 They are a product of PepsiCo's Frito-Lay company.