Hughes Blades, Inc. v. Diamond Tool Associates

191 F. Supp. 480, 128 U.S.P.Q. (BNA) 171, 1960 U.S. Dist. LEXIS 4856
CourtDistrict Court, S.D. California
DecidedNovember 10, 1960
DocketNo. 1156-58
StatusPublished
Cited by1 cases

This text of 191 F. Supp. 480 (Hughes Blades, Inc. v. Diamond Tool Associates) is published on Counsel Stack Legal Research, covering District Court, S.D. California primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Hughes Blades, Inc. v. Diamond Tool Associates, 191 F. Supp. 480, 128 U.S.P.Q. (BNA) 171, 1960 U.S. Dist. LEXIS 4856 (S.D. Cal. 1960).

Opinion

CROCKER, District Judge.

The court having heard defendants’ motion for summary judgment on August 1, 1960, and having taken the matter under submission, and having considered the arguments of the parties and the exhibits submitted, and having concluded that there is no genuine issue as to any material fact, and having further determined as a matter of law that the improvements made by plaintiff’s invention over prior art do not conform to that degree of newness specified within the Constitution, and that Claim 5 of plaintiff’s patent and the letters reissue pertaining to that claim are therefore invalid, hereby orders that defendants’ motion be granted.

Against the background of the Constitutional declaration in Article 1, § 8, Clause 8, that Congress shall have the power “To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries;” the legislature has provided that patents may be granted for “new and useful” inventions, (35U.S.C. § 101).

Only the former quality is at issue here. Plaintiffs have raised issues of commercial success, longer life and increased speed, all of which go to the issue of utility and all of which are of no avail where the test of newness has not been met. [481]*481 The issue of newness involves both questions of law and questions of fact, but in different steps, Bergman v. Aluminum Lock Shingle Corp. of America, 9 Cir., 1958, 251 F.2d 801. Where there is no genuine issue as to what the prior art is, and where there is no genuine issue as to the improvements which the questioned patent makes over prior art, the issue of patentability, that is, the question of whether the improvement so found is patentable or merely the exercise of mechanical skill or a “mincing step”, is a question of law, Great Atlantic and Pacific Tea Co. v. Supermarket Equipment Corp., 1950, 340 U.S. 147, 71 S.Ct. 127, 95 L.Ed. 162.

Here, each of the elements of the Hughes circular saw blade was old in the art: disc, slots, cutting elements of sintered diamonds and metal, were each found by the Patent Office. Hughes’ only addition was to place a hardened insert at the point of wear. Even if the patent which specifically indicates the use of a hardened element has been abandoned as contended by plaintiff, such an improvement is obvious to a layman, let alone to a person skilled in the art.

Whether or not plaintiff’s use of “buttons” to protect the core of the saw blade as suggested in other claims of the Hughes patent is patentable, is not before this Court in this litigation and is not decided.

Counsel for defendants is directed to prepare form of judgment in accordance with Local Rule 7, West’s Ann.Code.

The Clerk of this Court is directed to mail forthwith copies of this order to all counsel.

Findings of Fact

I

Plaintiff, Hughes Blades, Inc., is a corporation organized and existing under the laws of the State of California with its regular place of business in Pasadena, California.

II

Plaintiff, Norman P. Van Valken-burgh, is a citizen of the State of California and a resident of San Marino, County of Los Angeles, California.

III

Defendant, Meral W. Hinshaw, is a citizen of the State of California and is a resident of Torrance, County of Los Angeles, California.

IV

Defendant, John F. Martyr, is a citizen of the State of California and is a resident of Palos Verdes Estates, County of Los Angeles, California.

V

Defendant, Diamond Tool Associates, is a firm composed of Meral W. Hinshaw and John F. Martyr and has a place of business at Hawthorne, County of Los Angeles, California.

VI

Defendant, Huther Bros. Saw Mfg. Co., Inc. is a corporation organized under the laws of the State of New York, having a place of business at Rochester, New York, and qualified to do business in the State of California, and conducts a regular and established place of business at Los Angeles, California.

VII

This Court has jurisdiction of the parties and of the subject matter of this action.

VIII

United States Letters Patent in suit No. 2,763,258 was issued by the Commissioner of Patents of the United States on September 18, 1956 to Plaintiff, Hughes Blades, Inc., as assignee.

IX

A bona fide dispute exists between plaintiffs and defendants as to the validity of Claim 5 of United States Letters Patent in suit No. 2,763,258, and Claims 5, 12, 13, 14 and 15 of Reissue Letters Patent No. 24,562 in suit (the reissue of said Patent No. 2,763,258). Plaintiffs have accused defendants of infringing each of the aforesaid claims. Claim 5 of said reissue corresponds exactly to Claim 5 of Patent No. 2,763,258. Claims 12, [482]*48213, 14 and 15 of said reissue recite the same combination as Claim 5 of Patent No. 2,763,258 but in narrower terminology.

X

Patent No. 2,763,258 in suit relates to improvements in the construction of circular saw blades:

“Although the invention may be applied to a great variety of circular saws having cutting elements of various types, it is of particular utility when applied to circular saws provided with cutting segments composed of or containing diamonds or diamond chips.”

Claim 5 of said patent teaches the addition of hardened elements to the peripheral portion of a segmented circular saw to prevent wear to the core of such saw. Claim 5 reads as follows:

“A saw construction comprising: a core member having side surfaces terminating in a plurality of cutting elements carried by the core member at the peripheral edge, each cutting element including metal and diamond particles compressed and sintered together, each cutting element having uniform thickness, of polygonal section, and having side faces outwardly spaced from the side surfaces on said core member; said core member being provided with slots interrupting the peripheral edge between said cutting elements, and hardened elements carried by the core member adjacent the peripheral edge and having an inner edge spaced closer to the center of the core member than inner edge portions of the cutting elements.”

According to the Specification of the Hughes patent such circular saws have been, and are being, used in cutting grooves or slots in concrete or the like.

XI

During the prosecution of the application for the Hughes Patent the Commissioner of Patents failed to cite against Claim 5 the following prior United States patents:

Bley 2,454,125

McKay 1,699,746

XII

The authenticity of the Hughes file wrapper, the Bley Patent and the Exhibits in this Motion, was not questioned by plaintiffs. Plaintiffs contended that the McKay Patent had been abandoned. Since the court did not consider the McKay Patent in arriving at its conclusions in this Motion, this issue is irrelevant. The court did not require expert help in reading said Exhibits.

XIII

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Bluebook (online)
191 F. Supp. 480, 128 U.S.P.Q. (BNA) 171, 1960 U.S. Dist. LEXIS 4856, Counsel Stack Legal Research, https://law.counselstack.com/opinion/hughes-blades-inc-v-diamond-tool-associates-casd-1960.