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:
Feb. 07, 1984
Filed:
Sep. 21, 1981
Toshio Nakano, Nishitama, JP;
Yoshio Taniguchi, Hino, JP;
Ken Tsutsui, Nishitama, JP;
Akira Sasano, Nishitama, JP;
Tadeo Kaneko, Nishitama, JP;
Akiya Izumi, Mobara, JP;
Michiaki Hashimoto, Yono, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Disclosed is a method of producing color filters, which comprises forming a layer of an organic polymeric material having a predetermined light-sensitive characteristic on a substrate, exposing this layer to a predetermined pattern, developing the exposed layer to form a filter base and dyeing the filter base, wherein after the development of the exposed layer, the layer is wetted with a dehydrating solution to remove water from the filter base. By this dehydrating treatment, the filter base can be processed with very high precision.