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:
Aug. 08, 1995
Filed:
Nov. 01, 1993
Roger G Little, Bedford, MA (US);
Edward A Burke, Woburn, MA (US);
Other;
Abstract
An electric battery comprises: a nuclear source of relatively high energy radiation fluence; a semiconductor junction characterized by a curve for this fluence relating minority carrier diffusion length and a damage constant and; an enclosure having a sufficiently low thermal impedance for dissipation of sufficient heat from the nuclear source to permit predetermined degradation of the minority carrier diffusion length initially and predetermined maintenance of the minority carrier diffusion length thereafter; the nuclear source being a radionuclide selected from the class consisting of alpha, gamma and beta emitters; and the curve being substantially logarithmic.