US2816152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air-depolarized cells
Assignee: Union Carbide Corp
•
Filing: 1954-01-20
•
Granted: 1957-12-10
•
Expires: 1974-01-20
Abstract
No abstract record available.
Inventors
- 👤 Paul A Marsal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:33
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
AN AIR-DEPOLARIZED CELL COMPRISING A RECTANGULAR PLASTIC CASE, DIFFERENTLY COLORED TOP AND BOTTOM PLASTIC MEMBERS THEREFORM PERMITTING POLARITY DISCRIMINATION; A U-SHAPED ZINC ANODE INTEGRALLY UNITED WITH SAID CASE AND SEPARATED FROM THE BOTTOM MEMBER OF THIS CASE BY A SOFT PLASTIC GASKET, A TUBULAR COPPER RIVET SERVING AS AN EXTERNAL CONNECTOR FOR, AND SIMULTANEOUSLY HOLDING, SAID ANODE AND GASKET IN PREDETERMINED POSITION IN THE CELL CASE; AN ACTIVE CARBON CATHODE COMPOSED OF FINELY DIVIDED CARBONACEOUS PARTICLES INTEGRALLY UNITED WITH A THERMOPLASTIC RESIN AND INTERPOSED BETWEEN THE LEGS OF THE AFORESAID ANODE, SAID CATHODE BEING SEALED TO THE CELL COVER AND HAVING METALLIC CONTACT MEANS PROVIDED WITH APERTURES ALLOWING THE ENTRY OF AMBIENT AIR KINTO THE CELL; ANAQUEOUS ALKALINE ELECTROLYTE CONTAINING SODIUM HYDROXIDE AND ZINC OXIDE IMMOBILIZED BETWEEN PRESENT TO SUCH A AND CATHODE, SAID ELECTOLYTE BEING PRESENT TO SUCH A LEVEL IN SAID CELL THAT THE ENTIRE ANODE STRUCTURE INCLUDING SAID EXTERNAL CONNECTOR IS BELOW ELECTROLYTE LEVEL, AND A FLOCCOSE SEPARATOR PAD BETWEEN SAID ANODE AND CATHODE.
Claim 2
Dependent Claim
167 words
AN AIR-DEPOLARIZED CELL COMPRISING A RECTANGULAR PLASTIC CASE, DIFFERENTLY COLORED TOP AND BOTTOM PLASTIC MEMBERS THEREFORM PERMITTING POLARITY DISCRIMINATION; A U-SHAPED ZINC ANODE INTEGRALLY UNITED WITH SAID CASE AND SEPARATED FROM THE BOTTOM MEMBER OF THIS CASE BY A SOFT PLASTIC GASKET, A TUBULAR COPPER RIVET SERVING AS AN EXTERNAL CONNECTOR FOR, AND SIMULTANEOUSLY HOLDING, SAID ANODE AND GASKET IN PREDETERMINED POSITION IN THE CELL CASE; AN ACTIVE CARBON CATHODE COMPOSED OF FINELY DIVIDED CARBONACEOUS PARTICLES INTEGRALLY UNITED WITH A THERMOPLASTIC RESIN AND INTERPOSED BETWEEN THE LEGS OF THE AFORESAID ANODE, SAID CATHODE BEING SEALED TO THE CELL COVER AND HAVING METALLIC CONTACT MEANS PROVIDED WITH APERTURES ALLOWING THE ENTRY OF AMBIENT AIR KINTO THE CELL; ANAQUEOUS ALKALINE ELECTROLYTE CONTAINING SODIUM HYDROXIDE AND ZINC OXIDE IMMOBILIZED BETWEEN PRESENT TO SUCH A AND CATHODE, SAID ELECTOLYTE BEING PRESENT TO SUCH A LEVEL IN SAID CELL THAT THE ENTIRE ANODE STRUCTURE INCLUDING SAID EXTERNAL CONNECTOR IS BELOW ELECTROLYTE LEVEL, AND A FLOCCOSE SEPARATOR PAD BETWEEN SAID ANODE AND CATHODE.
References Cited (Backward Citations)
US1039949A
Cited
US1899615A
Cited
US2233593A
Cited
US2544115A
Cited
US2572918A
Cited
US2597116A
Cited
US2597119A
Cited
US2751428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |