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:
Apr. 28, 1987
Filed:
Mar. 26, 1986
Applicant:
Inventors:
Gustaaf H van der Hoorn, Eindhoven, NL;
Caspert G van der Staak, Eindhoven, NL;
Joseph J Lamberts, Eindhoven, NL;
Johannes H Schmitz, Eindhoven, NL;
Assignee:
U. S. Philips Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
350126 ; 350128 ;
Abstract
The projection screen has a transparent substrate having a front surface which is provided with mutually parallel ribs. Light-absorbing particles 7 whose size is 20 to 75% of the width of the grooves measured halfway the depth of these grooves, are disposed at the bottom of the grooves 4 between the ribs 2. The particles are fixed by means of a glue layer 6.
van der Hoorn, Gustaaf. (1987). Transmission projection screen and method of manufacturing same (U.S. Patent No. 4660930). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4660930
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile