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:
Jun. 13, 1989
Filed:
Jul. 15, 1988
Applicant:
Inventor:
Yasuhiko Saka, Yamato, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; G03B / ;
U.S. Cl.
CPC ...
358296 ; 353122 ; 353 84 ; 353D / ;
Abstract
A color overhead projector including a thermochromic film, a color filter, erasing means for erasing an image formed on the film, reading means for reading a color image to be projected, writing means for writing the color image to be projected into the film, and projecting means for projecting the color image written into the film onto a screen by illumining the film via the color filter.
Quick Actions:
Saka, Yasuhiko. (1989). Color overhead projector (U.S. Patent No. 4839731). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4839731
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile