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:
Aug. 08, 1989
Filed:
Jul. 14, 1987
Applicant:
Inventor:
Enid K Sichel, Lincoln, MA (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G02B / ;
U.S. Cl.
CPC ...
369100 ; 346 / ;
Abstract
A recording system for representing digital information in the form of marks and the absence of marks at a plurality of locations, each mark being formed in response to energy delivered by an optical beam; the device includes a material configured in a form to receive the beam at selected locations for forming the marks, the material being characterized by undergoing pyrolysis to form the marks at the selected locations in response to the energy.