In Re Butler

37 F.2d 623, 17 C.C.P.A. 810
CourtCourt of Customs and Patent Appeals
DecidedFebruary 6, 1930
DocketPatent Appeal 2231
StatusPublished
Cited by11 cases

This text of 37 F.2d 623 (In Re Butler) 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
In Re Butler, 37 F.2d 623, 17 C.C.P.A. 810 (ccpa 1930).

Opinion

BLAND, Associate Judge.

Appellant in 32 claims asked for a patent relating to an aluminum piston for automobiles and engines.

Appellant’s piston is claimed to overcome the difficulty in using aluminum pistons with east-iron or steel cylinders. The use of steel pistons in the ordinary cylinder was objectionable in so far as the piston was required to be too loose in order to avoid expansion and sticking. Aluminum pistons were found to be better, but, owing to the fact that aluminum and aluminum alloys are said to have a thermal coefficient of expansion approximately twice that of iron, the applicant sought by means of two steel rings or bars embedded in the aluminum piston and two wavy longitudinal expansion slots to control the expansion of the piston so as to conform to the expansion of the iron cylinder.

The examiner rejected claims 1 to 15, inclusive, and required division between claims 1 to 15 and claims 16 to 32. The division was required in order that separate claims might be presented upon the apparatus or article and the method of production. Applicant refused to separate, and the claims were rejected, from which action of the examiner appellant appealed to the Board of Appeals, later withdrawing his appeal as to claims 8 and 15, which were dismissed. The Board of Appeals affirmed the action of the examiner, from which decision of the Board of Appeals, appellant has appealed to this court.

While the appeal to this court does not involve all the claims, claim 1 is regarded as illustrative of the claims 1 to 15 for the piston, while claim 16 is illustrative of the claims 16 to 25 for the mold for making the piston, and claim 26 is an example of the method claims 26 to 36. Claims 1, 16, and 26 follow:

“1. A piston, comprising a head and a skirt, said skirt having a longitudinal slot extending through the wall of said skirt, said slot being wave-shaped at the exterior surface of said skirt.”
“16. A mold for easting pistons, comprising a cylindrical shell having a bottom, a removable cover plate for said shell, and a sand core hung from said cover plate and joined thereto by a breech block joint.”
“26. The method of making a piston, which consists in easting it in a metal mold with a sand core so that all the outer surfaces of the piston will cool in contact with the metal mold.”

Claims 1 to 15 were rejected on the following references: Martin, 1,394,926, October 25, 1921; Rautenbaeh, 1,396,341, November 8, 1921;. Pope, 1,432,897, October 24, 1922; Austin, 1,522,709, January 13, 1925 — which, we think, without detailed discussion here, disclose all claimed by appellant in his claims from 1 to 15. The pertinency of the references is fully set out in the decisions of the tribunals below.

As is stated by appellant, this ease involves three distinct reasons for appeal: First, whether certain of the claims claiming an invention of an apparatus were anticipated by the references (this question we have hereinbefore decided); second, whether or not this case presents an instance where the inventor, to secure the protection to which he claims he is entitled, is allowed to describe an article by reference to the process of its manufacture, it being claimed that there is no way to describe it except in that manner; third, the correctness of the ruling of the Patent Office requiring division between the claims calling for a patent on the article and the claims involving a process for making the article.

We will dispose of the third reason for appeal by stating that it is the rule and practice of the Patent Office, and so explained to appellant, to refer certain claims, such as claims drawn with reference to the mold for easting pistons, to division 3, under class 22, while claims for the methods would be referred elsewhere. The solicitor has called attention to the fact that the propriety of the division between the article and process claims is obvious, in view of the fact that it becomes a vital factor in determining infringement questions. We agree with this conclusion and find no error .in requiring division.

*625 The second ground of appeal is argued at great length and with considerable plausibility by appellant in this court. He not only insists that he should have his method patent for the method of producing the wavy slot, which slot is formed by compressible core bars in the easting of the piston, but that he should have a patent on the article or product also, although no claim can be referred to as distinguishing in any manner from a wavy slot sawed out of the piston and a wavy slot made in the molding, except in the difference that lies alone in the process of producing same. In other words, without disclosing any structural difference in the two articles, a piston with the sawed slot and a piston with the molded slot, it is contended that there is a structural difference and that that difference in the article is patentable upon a claim which refers only to the process of making same.

It is the position of the patent tribunals that as to the claim for patent for the wavy slot formed in the molding, applicant has made claim for nothing except, the process of making it. That the wavy slot aside from the process of making same is old is conceded.

Appellant complains of the action of the tribunals as follows: “Those claims which describe appellant’s piston by referring to the process of its manufacture were treated differently by the Primary Examiner and by the Board of Appeals. The Primary Examiner, completely ignoring facts demonstrated by appellant’s tests, merely stated 'it is immaterial insofar as the finished article is concerned whether the slot is formed in the casting of the piston by a compressible core bar or afterwards.’ The Board of Appeals contented itself with the statement that 'we think this feature properly forms the basis for method rather than article claims.’ ”

Appellant frankly admits that there is nothing in his so-called product claims which structurally distinguishes the wavy slot sawed and the wavy slot formed in the molding, but argues strenuously that there is a very great difference between them, which in the one instance results in a successful invention, and in the other a practically useless article, and argues that it is the law that where such a situation arises as that a new and useful invention has been brought about, and which is incapable of description except by reference to the process of its making, the patent law warrants the granting not only of a process patent but a patent upon the product of the process.

In appellant’s brief we find the following: “Although appellant knows that a piston with the slots formed during the easting operation differs from a piston the slots of which are later cut in, and although he can demonstrate this difference by test, he is unable to state what structural differences account for the difference in expansion between pistons of these two types. He has a theory, but has been unable directly to demonstrate its truth, although the manner in which the two types of pistons act when heated supports his theory.”

He next announces the theory, which we will not quote here, and then says “this theory is plausible, but it has not been directly demonstrated to be the truth.”

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Bluebook (online)
37 F.2d 623, 17 C.C.P.A. 810, Counsel Stack Legal Research, https://law.counselstack.com/opinion/in-re-butler-ccpa-1930.