In re Payne

463 F.2d 1367, 59 C.C.P.A. 1209, 175 U.S.P.Q. (BNA) 39, 1972 CCPA LEXIS 270

• Court: Court of Customs and Patent Appeals
• Decided: August 17, 1972
• Docket: No. 8755
• Status: Published

Opinions

Baldwin, Judge.

Payne appeals from the decision of the Patent Office Board of Appeals sustaining the rejection of claim 9 of his application¹ under 35-USC 103. We affirm.

The Invention

Appellant’s appealed claim deals with a process for making foam-liiled building panels. A sheet of a material such as steel, plasterboard or asbestos is first formed into the shape desired for one wall of the. panel. The top of that sheet is coated with a foaming plastic material such as polyurethane. The sheet of material which is to form the-other wall of the panel is then placed over the foaming plastic. The second sheet is held in a fixed position relative to the first sheet until the foaming material has come in contact with the second sheet and. foaming has essentially stopped. The appealed claim reads:

9. The method of preparing a foamed-filled building construction panel which, comprises:

applying a coating of foaming plastics composition to the top surface of a first panel sheet;

delivering the coated first panel sheet with the said plastics composition,actively foaming to a panel assembly station;

securing a second panel sheet to said first panel sheet in fixed juxtaposed relation therewith and with the said foaming plastics composition between the two panel sheets and whilst the said plastics composition is actively foaming; and

retaining the said two panel sheets in said fixed juxtaposed relation until the said plastics composition engages the said second sheet and essentially ceases its active foaming,

whereby the said two panel sheets become firmly bonded by the foamed plastics composition.

The Prior Art

Olaim 9 was rejected as unpatentable over a patent to Voelker.² The patent deals with processes for `making "rigid polyurethane foam sandwich" panels; particularly panels with improved dimensfonal stability. Apparently, previously known foam sandwich panels had poor dimensional stability on ageing. Voelker states that that instability was caused by the formation of ellipsoidally-shaped cells during foaming. Accordi~ng to Voelker "with passage of time the [ellipsoidal] cells tend to become more nearly spherical and, in becoming more spherical, impart a change in the thickness, length and/or width of the rigid polyurethane. foam panel."•

Voelker combats the formation of ellipsoidal cells by subjecting the panel to compression while the `polyurethane is foaming. The steps in Voelker's preferred embodiment are understood with reference to his Figure 1:

The foam precursor material is deposited on the top of a facing sheet 11 and another facing sheet is placed on top. The sandwich then traverses "creaming zone 14, rising zone 15 and gel strength develop-nient zone 16" before reaching dimensional stabilization zone 17. There the sandwich ~s subjected to pressure from belt 18 and pressure plate 23. From zone 17, the sandwich goes to curing zone 24 "in which the temperature of the rigidizing foam is maintained hot enough to bring about the substantially exhaustive reaction” of the chemicals which form polyurethane.

In his brief before the board, appellant discussed the state of the art as follows:

Various methods of producing prefabricated foam-filled building construction panels are known in tbe prior art. These methods can be separated into two distinct types.

TYPE I: In one method type, a foamed plastics composition, in liquid state, is introduced between a pair of continuous ribbons of sheet material while the ribbons are moved in unison at a selected speed. Examples of this method type will be found in U.S. patents 2,866,730; 2,983,962 ; 3,174,887.

TYPE II: In the second method type, two sheets are supported by a jig in clamped, spaced-apart relation and a foamed plastic composition, in a liquid state, is introduced therebetween and allowed to expand and cure. Examples of the second method type will be found in U.S. patents 3,090,078; 3,203,042; 3,203,043.

Appellant considers that the process of claim 9 is neither a Type I process nor a Type II process. The Voelker process is classified as a Type I process.

Opinion

Appellant singles out the “essential differences” as being that “Appellant secures the two sheets in a fixed juxtaposed relation and retains the two sheets in the said fixed juxtaposed relation.” Before the board, appellant stated:

In the VOELKER zone 17, the thickness of the sandwich is reduced from 5 to 40 per cent. Yet in the succeeding process, the foam core expands beyond the thickness of the zone 17. The Examiner mentions the Action I (the compression), but fails to acknowledge the required consequent Action II (a reexpansion).

Clearly, VOELKER’S ribbons 11, 12 do not remain in “.... fixed juxtaposed relation ...” as required by Appellant’s Claim 9.

We think that Voelker discloses securing or placing the sheets in a fixed juxtaposed relation by means of belt 18 and pressure plate 28 in the dimensional stabilization zone 17 and retaining them in that position through the duration of their stay in that zone. They remain in a fixed juxtaposed relation, for they do not move either vertically or horizontally relative to each other. We also find that retaining the sandwich in the compression stage until active foaming ceases would have been obvious in view of Voelker. In discussing the compression stage, Voelker states:

The [foam sandwich] precursor is retained in this condition while gelation and curing progress until the sandwieh can be cut and handled. Any further expansion of the polyurethane foam precursor tends to bring about an increase in the diameter of the thus established spheres instead of stretching the composition to form the elliptical cells. * * * [Emphasis ours.]

Appellant’s other arguments concerning alleged differences between ■the claimed process and that of Voelker are not of sufficient merit to warrant review.

The Patent Office has never clearly stated that appellant’s admissions concerning the prior art discussed above were relied on as a basis ■for rejection of the claim. As the solicitor states:

■* * * [Tibe subject matter of appealed claim 9 has been consistently rejected as being unpatentable over Voelker under 35 U.S.C. 103. No other rejection has appeared anywhere in the record.

Yet, in the discussion of that rejection in the examiner’s answer, the examiner gratuitously stated “In fact, any material difference between the Type II method and that defined in claim 9 escapes the Examiner.” Appellant’s “Type II” is also mentioned in the board opinion. On the basis of these “semi-rejections,” and for other reasons, appellant spent much of his brief alleging that he has been denied procedural due process because he was not informed of the basis of the rejection and that ■35 USC 132 has not been complied with because he was not supplied with the “information and references” necessary to judge “the propriety of continuing the prosecution of his application.” Cf. In re Hughes, 52 CCPA 1355, 345 F. 2d 184, 145 USPQ 467 (1965). However, with the view we take of the rejection based on Voelker under 35 USC 103, which was always clearly in the case, we do not reach those arguments.

1 Serial No. 674,317, filed October 10,1967.

2 U.S. Patent No. 3,231,4~9, issued ~anuary 25, 1966.