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:
Aug. 02, 1977
Filed:
Jul. 29, 1975
Applicant:
Inventors:
Keiji Shimiya, Hiratsuka, JA;
Norio Miura, Isehara, JA;
Assignee:
Dai Nippon Toryo Co., Ltd., Osaka, JA;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
250486 ; 250483 ;
Abstract
A radiographic intensifying screen having improved response function in the low spatial frequency region and high sharpness comprising a support and a fluorescent layer formed on the support, said fluorescent layer having dispersed therein fluorescent substance grains and having a grain size distribution of the fluorescent substance grains such that the grain size becomes smaller gradually from the front surface of the fluorescent layer to the back surface of the layer.
Shimiya, Keiji. (1977). Intensifying screens (U.S. Patent No. 4039840). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4039840
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile