Charles L. Robertson
Accountancy in Wilmington, DE
License number
Delaware CC-0000105
Issued Date
Aug 31, 1955
Category
Accountancy
Type
C.P.A. Certificate
Address
Address
2
Wilmington, DE 19807
Professional information
Particle Counting Apparatus
US Patent:
4565448, Jan 21, 1986
Filed:
Mar 11, 1983
Appl. No.:
6/474482
Inventors:
Scot D. Abbott - Wilmington DE
Charles W. Robertson - Wilmington DE
Charles W. Robertson - Wilmington DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
G01N 1502
US Classification:
356336
Abstract:
A particle counting apparatus includes a cuvette having a cylindrical bore therethrough and an exterior cylindrical surface the axis of which is perpendicular to the axis of the bore. The apparatus is adapted to detect light scattered from a particle that is small as compared to the wavelength of incident radiation and has an index of refraction close to that of the medium in which it is entrained.