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:
Jul. 09, 2019
Filed:
Mar. 02, 2017
Applicant:
Westco Scientific Instruments, Inc., Brookfield, CT (US);
Inventors:
Jerome J. Workman, Jr., Marlborough, MA (US);
John Glaberson, N Sandy Hook, CT (US);
Assignee:
PROCESS SENSORS CORPORATION, Milford, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/27 (2006.01);
U.S. Cl.
CPC ...
G01N 21/278 (2013.01); G01N 21/274 (2013.01);
Abstract
Various embodiments of a dark reference standard for an instrument are described. In one embodiment, the dark reference standard includes a sample cup and an arrangement of dark reference standard materials. The arrangement of dark reference standard materials can be embodied as a dark glass, such as a welding glass, and a polymer film such as a carbon black or carbon black master polymer film.