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. 16, 1989
Filed:
Jun. 24, 1987
Applicant:
Inventors:
Allen Frohardt, San Jose, CA (US);
John A Dahlquist, Palo Alto, CA (US);
John J Howarth, Monte Sereno, CA (US);
Assignee:
Measurex Corporation, Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01J / ;
U.S. Cl.
CPC ...
356448 ; 356243 ;
Abstract
A device for determining gloss on a surface having a calibrating feature wherein a gloss calibration standard is provided by means of a built-in standardization surface. The standardization surface provides a reference to which the gloss of a sample surface is compared. The standardization surface is protected from dust build-up throughout the operation of the device.