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. 30, 1991
Filed:
Oct. 04, 1990
Applicant:
Inventors:
Peter J Hollberg, Richmond, VA (US);
James C Swann, Waverly, VA (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F / ;
U.S. Cl.
CPC ...
162347 ; 162344 ;
Abstract
Use of a headbox with an auxiliary blade having a concave edge reduces the deflection required to modify the basis weight profile of a wet sheet formed in papermaking apparatus.
Hollberg, Peter. (1991). Headbox with concave auxiliary blade (U.S. Patent No. 5035773). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5035773
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile