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. 20, 1982
Filed:
Apr. 08, 1980
Applicant:
Inventor:
David J McIntyre, Bellevue, WA (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
351-6 ; 351 14 ; 356 42 ;
Abstract
Endothelial cell density is determined by comparing the specular image of the endothelium at a predetermined magnification with a set of grids each having a plurality of apertures formed in a hexagonal, honeycomb pattern. The apertures in each of the grids are closely spaced and of predetermined size corresponding to a predetermined cell density at the predetermined magnification.