Optical resin material and optical film

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 10598822
APP PUB NO 20160025898A1
SERIAL NO

14782243

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An object of the present invention is to provide an optical resin material and an optical film, which are very small in both orientation birefringence and photoelastic birefringence, excellent in transparency, have few defects due to foreign substances, and are excellent in heat resistance and mechanical strength. Provided is an optical resin material containing a graft copolymer (C) obtained by polymerizing a vinyl-based monomer mixture (B) in the presence of a vinyl-based polymer (A) having at least one crosslinked structure layer, wherein the graft copolymer (C) has an orientation birefringence of −15×10−4 to 15×10−4 and a photoelastic constant of −10×10−12 to 10×10−12 Pa−1.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
KANEKA CORPORATION2-3-18 NAKANOSHIMA KITA-KU OSAKA-SHI OSAKA 530-8288

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hatano, Keisuke Osaka, JP 81 296
Kitayama, Fuminobu Hyogo, JP 17 18
Maizuru, Nobuyoshi Hyogo, JP 7 2

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Sep 24, 2023
7.5 Year Payment $3600.00 $1800.00 $900.00 Sep 24, 2027
11.5 Year Payment $7400.00 $3700.00 $1850.00 Sep 24, 2031
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00