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:
Jun. 04, 1985
Filed:
Jul. 23, 1982
Applicant:
Inventors:
Charles M Paulson, Jr, Wilmington, DE (US);
Mark E Faulhaber, Wilmington, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
356367 ; 2504611 ; 356429 ;
Abstract
An apparatus for measuring the degree and direction of molecular orientation in film as it advances from a stretching zone. The apparatus includes a detection circuit which receives synchronous and sinusoidal reference and analytical signals based on a beam of rotating linearly polarized light.