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:
May. 29, 2001
Filed:
Apr. 08, 1997
Applicant:
Inventors:
Toshihiro Koike, Urawa, JP;
Teruo Ohnuma, Tokyo, JP;
Satoshi Ako, Asaka, JP;
Yasunori Sugiyama, Yono, JP;
Assignee:
Kimoto Co., Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 2/700 ; B29D 1/100 ;
U.S. Cl.
CPC ...
G02B 2/700 ; B29D 1/100 ;
Abstract
A view angle control sheet comprising a non-oriented light permeable polymer layer having cracks of regular directionality is disclosed. The view angle control sheet of the present invention has good view angle control property and can easily be obtained at low cost. The sheet having good view angle control property with respect to two or more directions can also easily be obtained as required at low cost. The view angle control sheet of the present invention can be used in office equipment displays, automobile meters, outdoor displays, windows and the like to desirably control view angles.