Application of Howard G. Rogers

394 F.2d 566, 55 C.C.P.A. 1092
CourtCourt of Customs and Patent Appeals
DecidedMay 16, 1968
DocketPatent Appeal 7909
StatusPublished
Cited by9 cases

This text of 394 F.2d 566 (Application of Howard G. Rogers) is published on Counsel Stack Legal Research, covering Court of Customs and Patent Appeals primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Application of Howard G. Rogers, 394 F.2d 566, 55 C.C.P.A. 1092 (ccpa 1968).

Opinion

WORLEY, Chief Judge.

This appeal is from the decision of the Board of Appeals affirming the examiner’s rejection of claims 1, 2, 4 and 5 in appellant’s application 1 as “unpat-entable over the claims of Haas 2 in view of Sawdey, Van Allan et al. or Tulagin et al.”

The invention relates to an improvement in a process of forming a dye image in an image-receiving layer by diffusion transfer techniques. 3 According to the specification, the color fastness of such dye images upon exposure to sunlight “left something to be desired.” To solve that problem appellant found that:

* * * prior to processing, an ultraviolet light absorber may be incorporated in a layer over the dyeable stratum of an image-receiving element and, during processing, that a substantial portion of the transferred color-providing substances may be caused to permeate through such a layer to the underlying dyeable stratum to form a color image which is protected from the deleterious effects of sunlight by the ultraviolet light absorber in the overlying layer. (Emphasis supplied.)

*567 The improvement is reflected in claim 1:

1. In a process of forming a photographic image in color wherein an exposed silver halide emulsion is developed in the presence of at least one dye developer to provide an image-wise distribution of mobile dye developer, said dye developer being a compound which is both a dye and silver halide developing agent, and said imagewise distribution of mobile dye developer is transferred to a superposed image-receiving stratum to produce a transfer image thereon, the improvement wherein said transfer is effected to an image-receiving element having an ultraviolet light absorber in an alkali-permeable polymeric stratum over the dyeable image-receiving stratum and transferring a substantial portion of the said mobile dye developer through said polymeric stratum to said dyeable image-receiving stratum, said polymeric stratum having less affinity for the said dye developer than the image-receiving stratum, said polymeric stratum comprising an alkali-insoluble polymer and said ultraviolet light absorber being nondiffusible. (Emphasis supplied.)

Claim 4 recites that a non-diffusible thiazolidine compound is employed as the ultraviolet light absorber, while claim 5 calls for the use of a polymeric ultraviolet light absorber.

The Haas patent also discloses and claims an improvement in the process of forming a dye image by diffusion transfer. Claim 1 of that patent, relied on by the board in support of the double patenting rejection, has a format similar to that of appellant’s claim 1, with the improvement recited in the following language:

* * * the improvement which comprises increasing the stability of said positive dye image by contacting said positive dye image with a compound selected from the group consisting of pyrogallol, gallic acid and esters of gallic acid. (Emphasis supplied.)

The board agreed with the examiner that the present claims do not define a separately patentable invention from that claimed by Haas. Like the examiner, the board thought it proper to look to the disclosure of Haas “to determine the scope of broad terms” employed in the Haas claims. It found that the step of “contacting said positive dye image with a compound” recited in claim 1 of Haas “is clearly intended to cover” not only the incorporation of the ultraviolet light absorber in the image-receiving layer itself, but also its use in an overlying layer. It also found the claims of the patent “include the non-diffusible as well as diffusible stabilizers,” and concluded that:

The differences between claims 1 and 2 herein and the patent claims are thus only in scope.

It is evident from the above discussion, as well as the examiner’s reliance on 35 U.S.C. § 101, 4 that, as to claims 1 and *568 2, both the examiner and board regarded appellant to be claiming the same invention as previously claimed by Haas. Although it is not entirely clear from the opinion of the board precisely what reasoning it employed in determining that Haas and Rogers are claiming the same invention, we can infer the examiner’s reasoning in interpreting the Haas’ claims from the direct references to portions of the Haas disclosure 5 appearing in his Answer. The examiner observed that Haas discloses stabilizing the dye image from sunlight by treating it, after its formation by diffusion transfer, with a solution comprising the pyrogallol derivative stabilizing agent and a film-forming polymer, thus forming a layer over the dye image which contains all or at least part of the total amount of stabilizer applied. That process per se, of course, has little relation to what is being claimed here. Or, the examiner noted, Haas may incorporate the stabilizer as part of his image receiving element prior to the transfer process by either (1) mixing the stabilizer with the dyeable material employed as an image receiving layer prior to coating it on its support, or (2) applying the stabilizer “as above, by permeation.” Relying on the latter disclosure, the examiner evidently concluded that Haas contemplated applying to the dyeable *569 image-receiving layer, prior to transfer, a solution comprising the stabilizer (for example, a non-diffusible gallic acid ester such as lauryl gállate) and a film-forming polymer, thus forming a polymeric layer over the image-receiving layer which contains at least some stabilizer and which is later permeated by the dye material during the transfer process.

While agreeing that it was appropriate for the examiner and board to look to Haas’ disclosure to facilitate a determination of the meaning of the words employed in the patent claims, 6 particularly the meaning of the word “contacting,” appellant urges that the Patent Office has misinterpreted the Haas patent. He contends that the Haas specification, properly construed, discloses the placement of the stabilizer only in the image-receiving layer prior to transfer, and not in a layer over the image-receiving layer.

We need not decide that question, for in our view there are other considerations which convince us that Haas and Rogers are not claiming the same invention. We are presented with a situation in which two inventors have each made an improvement in a basic process. Insofar as Haas’ claimed invention is concerned, the important consideration is the specific compounds employed as ultraviolet light absorbers.

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Bluebook (online)
394 F.2d 566, 55 C.C.P.A. 1092, Counsel Stack Legal Research, https://law.counselstack.com/opinion/application-of-howard-g-rogers-ccpa-1968.