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:
Oct. 31, 2000
Filed:
Sep. 16, 1998
Genji Imai, Kanagawa, JP;
Hideo Kogure, Kanagawa, JP;
Kansai Paint Co., Ltd., , JP;
Abstract
A negative type photosensitive resin composition is herein disclosed which is used under the irradiation circumstance of a safelight having a maximum wavelength within the range of 500 to 620 nm and a large spectral luminous efficiency; the composition being a liquid or a solid resin composition containing a photocurable resin, a photoreaction initiator and if necessary, a photosensitizing dye; an absorbancy of an unexposed film formed from this composition being 0.5 or less within the range of the maximum wavelength .+-.30 nm selected from the range of the maximum wavelength of the safelight. By the use of this negative type photosensitive resin composition, it is possible to form a resist pattern which is excellent in safe operativity, operational efficiency, the quality stability of products, and the like.