US3337336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition agents for sintering purposes
Assignee: Duracell Inc USA
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Filing: 1967-03-17
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Granted: 1967-08-22
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Expires: 1987-03-17
Abstract
No abstract record available.
Inventors
- 👤 Mlarur L B Rao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:49
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/10; B22F3/11; B22F3/1143; B22F3/1121; B22F3/1134; H; H01; H01M; H01M4/00; H01M4/02; B22F2998/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A PROCESS FOR FABRICATING POROUS SINTERED AMALGAMATED ZINC STRUCTURES FROM ZINC POWDER HAVING AN IMPURITY OXIDE FILM COMPRISING THE STEPS OF SELECTING A SINTERING AGENT FROM THE GROUP CONSISTING OF THE HALIDES OF AMMONIA AND ALUMINUM, HYDROZINE HYDROCHLOIRDE AND AMMONIUM ACID OXALATE, BLENDING 10 TO 60 PERCENT BY WEIGHT OF SAID SINTERING AGENT WITH ZINC PARTICLES HAVING AN IMPURITY OXIDE FILM AND MERCURIC CHLORIDE INITIATING A CHEMICAL REACTION BETWEEN SAID SINTERING AGENT AND SAID ZINC OXIDE FILM OF SAID METAL PARTICLES, COMPACTING SAID BLENDED MIX TO FORM A COMPACT, SAID CHEMICAL REACTION CLEANING SAID ZINC PARTICLES IN SITU AND LIBERATING HEAT SUFFICIENT TO SINTER SAID COMPACT TO FORM A POROUS ZINC STRUCTURE, SAID MERCURIC CHLORIDE REACTING WITH SAID CLEAN ZINC PARTICLES TO FORM AMALGAMATED ZINC, AND REMOVING THE RESULTING REACTION PRODUCTS, THE EXCESS OF SAID SINTERING AGENT AND THE EXCESS OF SID MERCURIC CHLORIDE TO PREVENT FURTHER SINTERING OF SAID SINTERED COMPACT LEAVING A POROUS SINTERED AMALGAMATED ZINC STRUCTURE.
Claim 2
Dependent Claim
159 words
A PROCESS FOR FABRICATING POROUS SINTERED AMALGAMATED ZINC STRUCTURES FROM ZINC POWDER HAVING AN IMPURITY OXIDE FILM COMPRISING THE STEPS OF SELECTING A SINTERING AGENT FROM THE GROUP CONSISTING OF THE HALIDES OF AMMONIA AND ALUMINUM, HYDROZINE HYDROCHLOIRDE AND AMMONIUM ACID OXALATE, BLENDING 10 TO 60 PERCENT BY WEIGHT OF SAID SINTERING AGENT WITH ZINC PARTICLES HAVING AN IMPURITY OXIDE FILM AND MERCURIC CHLORIDE INITIATING A CHEMICAL REACTION BETWEEN SAID SINTERING AGENT AND SAID ZINC OXIDE FILM OF SAID METAL PARTICLES, COMPACTING SAID BLENDED MIX TO FORM A COMPACT, SAID CHEMICAL REACTION CLEANING SAID ZINC PARTICLES IN SITU AND LIBERATING HEAT SUFFICIENT TO SINTER SAID COMPACT TO FORM A POROUS ZINC STRUCTURE, SAID MERCURIC CHLORIDE REACTING WITH SAID CLEAN ZINC PARTICLES TO FORM AMALGAMATED ZINC, AND REMOVING THE RESULTING REACTION PRODUCTS, THE EXCESS OF SAID SINTERING AGENT AND THE EXCESS OF SID MERCURIC CHLORIDE TO PREVENT FURTHER SINTERING OF SAID SINTERED COMPACT LEAVING A POROUS SINTERED AMALGAMATED ZINC STRUCTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |