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. 14, 1991
Filed:
Mar. 14, 1989
James R Montgomery, Menlo Park, CA (US);
Larry L Mohr, Pleasanton, CA (US);
Mouse Systems Corporation, Fremont, CA (US);
Abstract
A wavelength-selective pad that is transparent when viewed by light of a first wavelength .lambda..sub.1 (e.g., visible light) and is highly reflective when viewed by light of a second wavelength .lambda..sub.2 (e.g., infrared light). The pad has a grid positioned above the highly reflecting layer so that this grid can be sensed by use of light of wavelength .lambda..sub.2 while, simultaneously, images, graphics or text positioned below the pad may be read by use of light of wavelength .lambda..sub.1. A text scanner system that produces and senses light at the two wavelengths is used in combination with the pad to simultaneously read the graphics or text and the grid position of the beam that illuminates the graphics and text.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile