PATENT CLAIM ANALYSIS

Application Number: 16033646
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2018-11
Patent Classification: ["252", "588000"]

Abstract:
The purpose of the present invention is to provide an ultraviolet-absorbent glass that is suitable as a dark gray glass, that has a very low ultraviolet transmittance (TUV), and that has excellent color rendering properties for green. The present invention relates to an ultraviolet-absorbent glass in which: the ultraviolet transmittance (TUV) as defined in ISO 9050:2003 is 2% or less for a thickness of 2.8 mm; the visible light transmittance (TVA) based on a standard A light source is 10% to 30% inclusive for a thickness of 2.8 mm; the energy transmittance (TE) as defined in JIS R 3106:1998 is 30% or less for a thickness of 2.8 mm; a ratio R14/R9 for color rendering indices as defined in ISO 9050:1990 and JIS Z 8726:1990 is 1.8 or greater; and a ratio R14/R1 is 1.05 or greater.

Claim (Index 1):
An ultraviolet absorbing glass comprising, in mass % based on oxides: SiO 2 66 to 75%, Na 2 O 10 to 20%, CaO 5 to 15%, MgO 0 to 6%, Al 2 O 3 0 to 5%, K 2 O 0 to 5%, Fe 2 O 3 0.7 to 3.5%, FeO 0.2 to 1%, TiO 2 0.1 to 3.2%, CoO 0.01 to 0.04%, Se 0.005% or less, Cr 2 O 3 0.08% or less, and NiO 0.2% or less, satisfying a Redox ([divalent iron (Fe 2+ ) in terms of Fe 2 O 3 ]/[total of divalent iron (Fe 2+ ) in terms of Fe 2 O 3  and trivalent iron (Fe 3+ ) in terms of Fe 2 O 3 ]) being 15 to 40%, having an ultraviolet transmittance (TUV) specified by ISO 9050:2003 at a sheet thickness of 2.8 mm being 2% or less, having a visible light transmittance (TVA) based on a Standard Illuminant A at a sheet thickness of 2.8 mm being 10% or more and 30% or less, having an energy transmittance (TE) specified by JIS R3106:1998 at a sheet thickness of 2.8 mm being 30% or less, and having a ratio R14/R9 of a color rendering index specified by ISO 9050:1990 and JIS Z8726:1990 being 1.8 or more and a ratio R14/R1 thereof being 1.05 or more.

Metadata:
- Claim Count in Document: 31.0
- Percentile: 95.0
- Lexical Diversity: 2.07895
- Patent Class: 252.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15949211', '15914167', '15133330', '15450231', '15785593']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8256815132432961
- 35 USC 102 Novelty (BERT): 0.5045619627084198
- Combined Prediction Score: 0.7935695581898085
- Mean Citation Score: 285.69891
- Max Citation Score: 310.02695
- Similarity Product: 256.79702252072104

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test