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:
Mar. 21, 2000
Filed:
Oct. 16, 1997
Grier S Fleischhauer, Midlothian, VA (US);
Charles T Higgins, Richmond, VA (US);
D Bruce Losee, Richmond, VA (US);
J Robert Nelson, Jr, Easton, CT (US);
Robert L Ripley, Midlothian, VA (US);
Masato Sano, Sumoto, JP;
David E Sharpe, Chesterfield, VA (US);
Michael L Watkins, Chester, VA (US);
Philip Morris Incorporated, New York, NY (US);
Abstract
A novel controller in an electrical smoking system and method, wherein the method includes the steps of: establishing a preferred thermal pathway to be executed with each heater activation responsively to a puff on an electrically heated cigarette; configuring a power cycle in accordance with the desired thermal pathway; dividing the power cycle into at least first and second phases each having a respective, predetermined time period and total energy input for each phase; and adjusting a respective duty cycle (or other power-adjusting factor) in each phase of the power cycle responsively to a voltage reading of the power source such that the established, respective total energy input of each phase is achieved during the time period of each power cycle.