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
Personal information
See more information about Charles L. Robertson at radaris.comName
Address
Phone
517 Twaddell Mill Rd, Wilmington, DE 19807
Professional information
See more information about Charles L. Robertson at trustoria.com
Particle Counting Apparatus
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.