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. 23, 2000
Filed:
Mar. 25, 1997
Applicant:
Inventor:
Paul M Heilman, III, San Mateo, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08C / ;
U.S. Cl.
CPC ...
178 1801 ; 178 1901 ; 178 1903 ; 178 1904 ; 178 1905 ;
Abstract
An improved writing device containing a stylus comprised of a self-lubricating material such as lignum vitae. Lignum vitae is a natural, wood product containing a waxy substance that reduces friction at the tip of the stylus as the tip is moved over a surface. A writing device having a stylus fabricated of lignum vitae is substantially less prone to scratch, mar or otherwise damage the surface of a pen-based data input instrument.