The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 1980
Filed:
Nov. 21, 1977
Applicant:
Inventors:
Toshio Uchida, Asaka, JP;
Yorimiti Yabuta, Asaka, JP;
Hiroshi Noguchi, Asaka, JP;
Eiichi Hasegawa, Asaka, JP;
Teppei Ikeda, Asaka, JP;
Assignee:
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; G03C / ;
U.S. Cl.
CPC ...
428212 ; 96 2 / ; 96 28 ; 96 67 ; 428913 ;
Abstract
A step tablet in which density steps of a definite shape, each density step having a specific optical density, form a series of decreasing or increasing densities, in which any two density steps contiguous to each other are disposed with a boundary space of a specific shape between the density steps.