Tobacco Documents Online

PHILIP MO.°.R!S INCORPORATED INTER-OFFICE CORRESPONDENCE RICNNOND, VIRGINIA TIAL 1 ' ~f` - ~' CONFtDEN J •Y ~ . Dr. E. R. riakehem Date: June 6i 1961 ~, Y "• ~1 ~ •aw: Thelma C. HeatHole ~tv J ~~ i (~ % 9'4'~ •bject: . Self-liyb;.ng end self-exti nguishic„ Cigarettes ~ Since the time that Philip A:orris has had a Reseerch,Divfsioa,, nite out idE ideas concerned with a self-lighting cigerette (see attached list) hevo been submitted for evelu:tion. Our correspondence about them indicates that practicelly ell of them were referred to the Marceting Department. The evalustions of them by the Research Division is summarized belora: LiShting reliability - around 30;; Ciger_ttes marbled Phos2horus odor in side stream Fire hazard in manufacturinz Clu_sy product Would reouire specislly designed machinery Would require premium price l;eterials toxic Between 1952 and the present time, fie U'. S. patents have issued on Class 131 - Subclass 7 - Ignition Source Coabined vith Cigerette; U.S. 2,652,060, U.S. 2,721, 558, U. S. 20724,383, U. S. 2p844,152, U. S. 2,674,700. Three of these patefits, end one that issued iri 1929 are attached. These are our only copies and should be returned to the files. Three outside ideas concerned with a self-extinSuishing cigarette have been sub- mitted sin_e 1952. Two of these have come to us recently. Thermofaxes of the ideas end the evaluations of them are sttached. I have been unable to find any petents issued between 1952-1961 on a self-extiu.;uishing ciberette. (*;rs. ) Thelma C. Heetwole Patent Lieison Officer i'Cif:3e cc: Dr. ii. 3avley C6i-01248