US2991257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive compositions and the process of making the same
Assignee: Chemelex Inc
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Filing: 1957-01-18
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Granted: 1961-07-04
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Expires: 1977-01-18
Abstract
No abstract record available.
Inventors
- 👤 Smith-Johannsen Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 07:35
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315; H; H01; H01B; H01B1/00; H01B1/14; H01B1/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
113 words
THE METHOD OF FORMING A COMPOSITION CAPABLE OF BEING FORMED INTO ELECTRICALLY CONDUCTIVE STRUCTURES AND FILMS WHICH COMPRISES FORMING AN AQUEOUS SOLUTION OF BETWEEN ABOUT 3 AND 5 PARTS BY WEIGHT OF AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF HYDROLYZABLE ORGANO SILICATES AND SODIUM SILICATES, ABOUT 1 PART BY WEIGHT OF AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF SILICA AEROGEL AND VAPOR PHASE SILICA AND PARTICLES OF ELECTRICALLY CONDUCTIVE MATERIALS IN A SUFFICIENT AMOUNT TO RENDER THE COMPOSITION ELECTRICALLY CONDUCTIVE WHEN DRIED, AND PRECIPITATING THE SILICA FROM SAID COMPOSITIONS IN THE PRESENCE OF THE DISPERSED SILICA AND THE ELECTRICALLY CONDUCTIVE MATERIAL WHILE MAINTAINING THE COMPOSITION IN THE AQUEOUS STATE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |