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. 25, 1987
Filed:
Jun. 12, 1985
David L Cameron, Daytona Beach, FL (US);
Other;
Abstract
An electronic calculator having unique utility for computation in chemical stoichiometry is described. Push-bottom input keys for stoichiometry are labeled by chemical unit, each of said keys being juxtaposed to an LED indicator light, and said keys being apportioned by line segments on the keyboard into five functional groups. The stoichiometry keys utilize variable conversion factors input by the user to automatically effect arithmetic conversion of a number, input with its chemical unit, into the equivalent number having a different chemical unit, said units being implicitly displayed by illumination of appropriate LED's. For students and others, the invention greatly simplifies the task of computation in chemical stoichiometry.