Legal Opinion
National Filters, Inc. v. Research Products Corporation
Court of Appeals for the Fifth Circuit
Decided October 11, 1967No. 23883_1PublishedCited by 21 opinions
1Opinion of the Court
GODBOLD, Circuit Judge:
National Filters, Inc., the defendant below, appeals from a judgment that certain claims of two United States patents are valid and that it has infringed them. The suit was brought by Research Products Corporation, assignee of Patents No. 3,031,827 and 3,155,560.
Patent ’827 is for a filter for liquids or gases, made of multiple layers of slit and expanded metal foil, in which the layers of metal forming it are bonded together by a bonding material. Patent ’850 is the method patent for making the filter, consisting of stacking a number of layers of the expanded metal…
2Cases cited10 opinions
- Graham v. John Deere Co. of Kansas CitySupreme Court of the United States · 1966
- Western States MacH. Co. v. S. S. Hepworth Co.Court of Appeals for the Second Circuit · 1945
- Zero Manufacturing Company, Inc. v. Mississippi Milk Producers AssociationCourt of Appeals for the Fifth Circuit · 1966
- Skee-Trainer, Inc., and Stewart J. Leonard v. Garelick Mfg. Co.Court of Appeals for the Eighth Circuit · 1966
- Cincinnati Rubber Mfg. Co. v. Stowe-Woodward, Inc.Court of Appeals for the Sixth Circuit · 1940
5 more not listed; retrieve them via the Exa API.
3Cited by21 opinions
- Schnading Corporation v. Gaines Manufacturing Co., Inc.Court of Appeals for the Sixth Circuit · 1974
- Kolene Corporation, and Deutsche Gold-Und-Silber Scheideanstalt Vormals Roessler v. Motor City Metal Treating, Inc.Court of Appeals for the Sixth Circuit · 1971
- Control Components, Inc., and Richard E. Self v. Valtek, Inc. And Alpha Engineering CompanyCourt of Appeals for the Fifth Circuit · 1980
- Louis W. Parker, Plaintiff-Appellee-Cross v. Motorola, Inc., Defendant-Appellant-CrossCourt of Appeals for the Fifth Circuit · 1975
- Duplan Corp. v. Deering Milliken, Inc.District Court, D. South Carolina · 1977
16 more not listed; retrieve them via the Exa API.