US3264229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making conductive zinc oxide
Assignee: American Zinc Lead and Smelting Co
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Filing: 1964-02-10
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Granted: 1966-08-02
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Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Otto C Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:47
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/08; C; C01; C01G; C01G9/00; C01G9/02; C09; C09C; C09C1/00; C09C1/04; C09C1/043; C01P; C01P2006/00; C01P2006/40; C01P2006/60; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
THE METHOD OF MAKING ELECTRICALLY CONDUCTIVE ZINC OXIDE COMPRISING MIXING WITH A PIGMENT ZINC OXIDE OF A PURITY OF AT LEAST 96% AND A SPECIFIC RESISTIVITY OF AT LEAST 10**8 OHM-CM., A SALT THE CATION OF WHICH IS TAKEN FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, AND LITHIUM AND THE ANION OF WHICH IS TAKEN FROM THE GROUP CONSISTING OF CYANATE, CYANIDE, THIOCYANATE, HYDROXIDE, FORMATE CARBONATE AND BICARBONATE, SAID SALT BEING PRESENT IN AN AMOUNT LESS THAN TEN PERCENT BY WEIGHT OF SAID ZINC OXIDE; SUBSEQUENTLY HEATING THE MIXTURE TO A TEMPERATURE ABOVE 650* C. AND BELOW THE SINTERING TEMPERATURE THE ZINC OXIDE, IN AN ATMOSPHERE WITHIN THE RANGE FROM MILDLY REDUCING TO OXIDIZING UNTIL AT LEAST PARTIAL DECOMPOSITION OF SAID SALT HAS OCCURRED, AND COOLING SAID ZINC OXIDE.
Claim 2
Independent Claim
129 words
THE METHOD OF MAKING ELECTRICALLY CONDUCTIVE ZINC OXIDE COMPRISING MIXING WITH A PIGMENT ZINC OXIDE OF A PURITY OF AT LEAST 96% AND A SPECIFIC RESISTIVITY OF AT LEAST 10**8 OHM-CM., A SALT THE CATION OF WHICH IS TAKEN FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, AND LITHIUM AND THE ANION OF WHICH IS TAKEN FROM THE GROUP CONSISTING OF CYANATE, CYANIDE, THIOCYANATE, HYDROXIDE, FORMATE CARBONATE AND BICARBONATE, SAID SALT BEING PRESENT IN AN AMOUNT LESS THAN TEN PERCENT BY WEIGHT OF SAID ZINC OXIDE; SUBSEQUENTLY HEATING THE MIXTURE TO A TEMPERATURE ABOVE 650* C. AND BELOW THE SINTERING TEMPERATURE THE ZINC OXIDE, IN AN ATMOSPHERE WITHIN THE RANGE FROM MILDLY REDUCING TO OXIDIZING UNTIL AT LEAST PARTIAL DECOMPOSITION OF SAID SALT HAS OCCURRED, AND COOLING SAID ZINC OXIDE.
References Cited (Backward Citations)
US3089856A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |