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:
Apr. 21, 1998
Filed:
Jul. 11, 1995
Duncan W McBranch, Santa Fe, NM (US);
Benjamin R Mattes, Santa Fe, NM (US);
Aaron C Koskelo, Los Alamos, NM (US);
Alan J Heeger, Santa Barbara, CA (US);
Jeanne M Robinson, Los Alamos, NM (US);
Laura B Smilowitz, Los Alamos, NM (US);
Victor I Klimov, Los Alamos, NM (US);
Myoungsik Cha, Goleta, CA (US);
N Serdar Sariciftci, Santa Barbara, CA (US);
Jan C Hummelen, Groningen, NL;
The Regents of the University of California, Los Alamos, MN (US);
Abstract
Optical limiting materials. Methanofullerenes, fulleroids and/or other fullerenes chemically altered for enhanced solubility, in liquid solution, and in solid blends with transparent glass (SiO.sub.2) gels or polymers, or semiconducting (conjugated) polymers, are shown to be useful as optical limiters (optical surge protectors). The nonlinear absorption is tunable such that the energy transmitted through such blends saturates at high input energy per pulse over a wide range of wavelengths from 400-1100 nm by selecting the host material for its absorption wavelength and ability to transfer the absorbed energy into the optical limiting composition dissolved therein. This phenomenon should be generalizable to other compositions than substituted fullerenes.