US3391016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon carbide coating on graphite bores of heat exchanger
Assignee: Texas Instruments Inc
•
Filing: 1964-10-16
•
Granted: 1968-07-02
•
Expires: 1984-10-16
Abstract
No abstract record available.
Inventors
- 👤 Jr James W Mccrary
- 👤 Iii Robert C Post
- 👤 John J Aylwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:36
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/50; C04B41/5053; C04B41/5057; C04B41/5059; C04B41/80; C04B41/81; C04B41/85; C04B41/87; F; F28; F28F; F28F21/00; F28F21/02; F28F7/00; F28F7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB362020A
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US2011877A
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US2721730A
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US2812272A
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US3157541A
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US3066044A
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US3011912A
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US3120451A
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US3190262A
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US3233578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |