Patents Represented by Law Firm Sughrue, Rothwell, Mion, Zinn & Macpeak Sughrue, Rothewll, et al - Justia Patents Search

Patents Represented by Law Firm Sughrue, Rothwell, Mion, Zinn & Macpeak Sughrue, Rothewll, et al

1,4-Bis(2-isopropyl-6-methylanilino)anthraquinone and a polyethylene terephthalate film containing same as an x-ray photographic film support

Patent number: 3933502

Abstract: 1,4-BIS(2'-Isopropyl-6'-methylanilino)anthraquinone and a polyethylene terephthalate film support containing this anthraquinone. The anthraquinone has high heat stability and good sublimation characteristics, and has no adverse effects on photographic characteristics when a polyethylene terephthalate film containing the anthraquinone is used as a film support.

Type: Grant

Filed: August 3, 1973

Date of Patent: January 20, 1976

Assignee: Fuji Photo Film Co., Ltd.

Inventors: Atsuaki Arai, Noburo Hibino, Kunihira Seto