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. 02, 1988
Filed:
Sep. 16, 1986
Applicant:
Inventor:
Robert D Rosenthal, Gaithersburg, MD (US);
Assignee:
Trebor Industries, Inc., Gaithersburg, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
2502521 ; 356243 ;
Abstract
A fixed stable standard for near-infrared reflectance measurement is provided by using a sample holder having an IR-quartz window and a measured amount of PTFE powder pressed directly thereagainst so that the PTFE powder has a fixed density providing a permanent reflectance standard protected by the window, and a method of making the standard is also provided.