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:
Dec. 16, 1986
Filed:
Mar. 14, 1985
Larry D Nichols, Arlington, MA (US);
Moleculon Research Company, Cambridge, MA (US);
Abstract
A color change indicator including: a liquid having a predetermined index of refraction and rate of evaporation; a reservoir for holding the liquid; and an opacifying layer of microporous material. The opacifying layer has an index of refraction approximately the same as that of the liquid and overlies the reservoir. The opacifying layer has an open-cell network of pores for absorbing the liquid from the reservoir and is in a first radiation scattering condition when the liquid occupies the opacifying layer and in a second scattering condition when the liquid is depleted from the opacifying layer.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile