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:
Nov. 24, 1987
Filed:
Feb. 26, 1987
Applicant:
Inventors:
Bruce D Orensteen, St. Paul, MN (US);
Thomas I Bradshaw, Afton, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; F16L / ; F16L / ; F16J / ;
U.S. Cl.
CPC ...
430 11 ; 430 10 ; 430273 ; 430290 ; 430496 ; 430945 ; 430946 ; 430346 ; 283 85 ; 283 87 ; 283 91 ; 283 93 ;
Abstract
A sheet containing an integrated-directional, half-tone image. Each sheet may contain one or more such images. Also a method for forming such images in microlens sheetings comprising directly a highly collimated light through an interposed half-tone mask.