Society of Motion Picture Engineers : incorporation and by-laws (1925)

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158 Transactions of S.M.P.E., March 1926 Claifn 1 : The herein described process of making colored photographs consisting in producing the various primary colors on an exposed halogen silver film by developing such film by means of such substances as are oxidized by exposed halogen-silver, to colored substances soluble with difficulty. Rudolph Fischer, U. S. No. 1,102,028. June 30, 1914. Filed Jan. 27, 1913 Claim 1: A process of making colored photographic pictures, consisting in developing pictures on halogen silver films with a developer that contains a substance which in connection with the oxidation product of the developer forms a colored body soluble with difficulty. DISCUSSION Mr. Kelley: We have had with us this week the granddaddy of all this work, Mr. F. E. Ives. I am very proud he is here and can help us in it. He has worked in the development of color photography for fifty or sixty years and is still at work. Mr. Ives: Since the subject of color cinematography patents is now being discussed, I wish to call attention to one source of confusion due to quoting patent dates with the implication that they reveal the status of different claimants with respect to substantially the same invention. In England, the date of a provisional patent specification is the first date of record and also the date of the patent finally issued. In the United States, the date when an inventor demonstrates his invention and communicates it to his patent attorneys and business associates corresponds practically to the date of a provisional patent specification in England, though he may not file his application in the patent office until six months later, and his patent may not be (and seldom is) issued and dated until one or more years after that. Six months' delay in filing the application in this country (although unwise) does not invalidate an inventor's claims, else he would file without such delay. The significance of all this is illustrated in the matter of my U. S. Patent No. 1,170,540, dated February 8, 1916. Cox, in England, disclosed a similar process in a provisional specification July 1, 1914, which thus became the date of his patent, making its date a year and a half in advance of my own; but my communication to my patent attorneys and business associates, which in this country corresponds