Legal Opinion
E. I. Dupont De Nemours & Co. v. Diamond Shamrock Corp.
District Court, D. Delaware
Decided September 16, 1981No. Civ. A. 80-137PublishedCited by 17 opinions
1Opinion of the Court
OPINION
STAPLETON, District Judge:
DuPont filed this action in the District of Delaware on March 27, 1980, seeking a declaration of the invalidity of United States Patent No. 4,192,725, issued to Ronald Dotson and Kevin J. O’Leary and assigned to Diamond Shamrock (“the Dotson ’725 patent”). The Dotson ’725 patent claims a process for producing chlorine and sodium hydroxide (lime) by the electrolysis of a solution of water and ordinary salt (sodium chloride). The Dotson process involves the use of a membrane which transmits positively charged ions (cations) which collect in one chamber of the…
2Cases cited8 opinions
- Van Dusen v. BarrackSupreme Court of the United States · 1964
- Blonder-Tongue Laboratories, Inc. v. University of Illinois FoundationSupreme Court of the United States · 1971
- Kerotest Manufacturing Co. v. C-O-Two Fire Equipment Co.Supreme Court of the United States · 1952
- Crosley Corporation v. Hazeltine CorporationCourt of Appeals for the Third Circuit · 1941
- Kerotest Mfg. Co. v. C-O-Two Fire Equipment Co.Court of Appeals for the Third Circuit · 1951
3 more not listed; retrieve them via the Exa API.
3Cited by17 opinions
- Ricoh Co., Ltd. v. Honeywell, Inc.District Court, D. New Jersey · 1993
- American Telephone & Telegraph Co. v. MCI Communications Corp.District Court, D. New Jersey · 1990
- National Micrographics Systems, Inc. v. Canon U.S.A., Inc.District Court, D. New Jersey · 1993
- EMPTY BARGE LINES II v. Dredge Leonard FisherDistrict Court, E.D. Texas · 2006
- Cambridge Filter Corp. v. International Filter Co.District Court, D. Nevada · 1982
12 more not listed; retrieve them via the Exa API.