Craft-Stone, Inc. v. Zenitherm Co.

22 F.2d 401, 1927 U.S. App. LEXIS 3342
CourtCourt of Appeals for the Third Circuit
DecidedSeptember 24, 1927
Docket3528
StatusPublished
Cited by15 cases

This text of 22 F.2d 401 (Craft-Stone, Inc. v. Zenitherm Co.) is published on Counsel Stack Legal Research, covering Court of Appeals for the Third Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Craft-Stone, Inc. v. Zenitherm Co., 22 F.2d 401, 1927 U.S. App. LEXIS 3342 (3d Cir. 1927).

Opinion

DAVIS, Circuit Judge.

This is an appeal from a decree adjudging United States letters patent No. 1,183,694, issued to Balthasar Sutter, to be valid and infringed.

The defendant has brought the ease here for review on fourteen assignments of error; but they all relate to two main questions: Validity and infringement. The defendant filed a counterclaim which the court dismissed; but his action in so doing is not before us, for it has not been made the subject of an assignment or discussion.

The patent relates to new and useful improvements in fireproof insulating building material and the process of producing the same. We have, therefore, a patent for a process and a product. It has nine claims, only two of which, the first and the fourth, are in issue. The first claim is for the process and the fourth for the product.

The process consists in mixing granulated vegetable and mineral matter in its natural state, such as wood chips or shavings, with granulated mineral matter — powdered magnesite — until each particle of vegetable matter is coated with the mineral matter. Then these chips or shavings coated with magnesite are mixed with a binder solution of magnesium chloride. The magnesite or magnesium oxide and magnesium chloride form a cement which lightly coats the wood particles, leaving them in a loose, nonhomogeneous, and ineompacted state. This loose mass or aggregation of coated wood particles is put into a mold so as to form a layer of uniform thickness, which is then compressed, under a pressure of about 2,500 to 3,000 pounds per square inch, into a homogeneous mass; the cement being permitted to set so as to form a solid slab, mainly made from the wood particles which have been crushed and brought into intimate contact with each other, with a minimum amount of cement holding them together.

This product may he sawed, nailed, or otherwise worked as wood. Yet it is light, fireproof, strong, nonhygroscopie, possesses high insulating and sound-deadening properties, will not warp, and is well adapted to use on floors and interior and exterior walls. There seems to have been no product just like it before.

The plaintiff company had two men in its employ, Mr. George C. Wilson, its sales manager, and Mr. Thomas Garvin, a salesman. After working for the plaintiff for some time and, one or both, becoming more or less acquainted with its process and product, and the n'ames and location of its customers, they left its employ and early in 1925 incorporated the defendant, Craft-Stone Corporation. Mr. Wilson became its president and Mr. Garvin its vice president. They began to manufacture an insulating building material which the plaintiff says is substantially identical with its own in character and was made by practically the same process.

The primary question is validity. None of the many patents of the prior art upon which the defendant relies had taught the world the art of coating granulated, vegetable matter in its natural state with granulated mineral matter, and then of compressing this loose, nonhomogeneous mass into a solid, homogeneous, useful slab having charaeteris *402 ties of both, wood and stone. There seems to be some controversy between the District Court and appellant as to whether or not the appellant’s “best reference is the Mattison patent, No. 898,381,” or . whether “the nearest approach to defendant’s process is found in Bidtel, 827,286.” However that may be, the proofs show that there never was a product on the market like Zenitherm before the invention of the patent and none since except that of the defendant. Judge Bodine, after carefully analyzing the Mattison patent, defendant’s best reference, said: “The Mattison floor differs in no essential from any other magnesite floor. Neither Mattison’s product nor his process has the slightest resemblance to Dr. Sutter’s invention.” In tho Mattison floor, there was a layer of cork coated with Sorel cement; then a layer of wood splinters bound together with Sorel cement and-troweled; the next and last layer was of wood flour, asbestos, and Sorel cement troweled to form the finishing floor surface. This invention neither in process nor product anticipates the invention of Sutter’s patent.

The defendant said: “The nearest approach to defendant’s process is found in Bidtel) 827,286.” If the defendant’s process is substantially identical with that of plaintiff’s, which we will later discuss, we would expect Bidtel to anticipate it.

What Bidtel claims to have invented are “certain new and useful improvements in magnesia cement,” which “consists in mixing a concentrated solution of chloride of magnesium, sawdust, or other suitable filler, preferably of a porous nature, which will absorb the solution.” Such a filler remains moist and difficult to handle. To overcome this, he added infusorial earth or fossil flour, which forms a coating over the particles of the filler, absorbs the moisture and renders the mixture dry and easy to handle. After the cement has been shipped to the point where it is to be used, Bidtel there adds to the mixture finely pulverized burnt magnesite and water which effects the chemical reaction necessary to cause the mass to set and become hard. The proportions of these ingredients are stated in his claims as follows:

“1. The combination of substantially thirty-six parts by weight of sawdust, eighty-five parts of magnesium chloride solution (36.8° Baume) and twenty-five parts of infusorial earth, forming a substantially dry ingredient of magnesium cement.
“2. The herein described composition of matter, which consists substantially of thirty-six parts by weight of an absorbent filler, eighty-five parts of magnesium chloride solution (36.8° Baume), twenty-five parts infusorial earth, seventy-five parts pulverized burnt magnesite, and forty-three and one-half parts water.”

The plaintiff’s product has three ingredients : Granulated cork, wood chips, shavings, pr other vegetable matter; magnesite or other granulated mineral matter; and a binder solution of magnesium chloride, acetyl cellulose, etc. The process by which the patentee made his product had three steps: (1) Mixing the shavings with magnesite until they were coated; (2) mixing coated shavings with a binder solution of magnesium chloride, which produces a loose nonhomogeneous mass; and (3) compressing by regulated— “sufficient” but not “excess” — pressure this loose mass into a homogeneous mass.

The invention lies in the creation and compression of this loose, nonhomogeneous mixture of mineral-coated vegetable matter into a homogeneous mass of artistic appearance and useful qualities. Whatever may be said about the different constituent elements used by the plaintiff and Bidtel, the latter did not have the third and important element of the plaintiff’s process. This the defendant admits, but says that the state of the art permits the use of pressure with any Sorel cement process. The patentee invented a new and useful product, and it is not permissible for an infringer to go to the prior art and defeat the patent by selecting the various elements of the patentee’s process from different patents, bring them together, and say that this aggregation anticipates. Knowledge after the event is always easy, and problems once solved present no difficulties. Loom Co. v. Higgins, 105 U. S. 580, 26 L. Ed. 1177; Diamond Rubber Co., etc., v.

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Bluebook (online)
22 F.2d 401, 1927 U.S. App. LEXIS 3342, Counsel Stack Legal Research, https://law.counselstack.com/opinion/craft-stone-inc-v-zenitherm-co-ca3-1927.