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:
Feb. 14, 1989
Filed:
Feb. 18, 1988
Applicant:
Inventors:
Ravinder Prakash, Concord, NC (US);
Larry L Wolfe, Broomfield, CO (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346160 ; 346108 ;
Abstract
An aspheric lens exhibiting varying optical power as a function of locating along the longitudinal axis of the lens is intended for use in an electrophotographic printer of the type having a mirror for providing tilt error and scan bow error correction of a laser beam to be imaged at a photoconductor surface.
Prakash, Ravinder. (1989). Aspheric lens for polygon mirror tilt error correction and scan bow (U.S. Patent No. 4804981). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4804981
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile