US3499799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing dense,adherent boron nitride films and certain articles of manufacture
Assignee: Texas Instruments Inc
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Filing: 1964-06-02
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Granted: 1970-03-10
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Expires: 1984-06-02
Abstract
No abstract record available.
Inventors
- 👤 Robert J Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:26
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/80; C04B41/81; C04B41/89; C04B41/45; C04B41/52; C23; C23C; C23C16/00; C23C16/02; C23C16/0209; C23C16/0218; C23C16/22; C23C16/30; C23C16/34; C23C16/342; C23C28/00; C23C8/00; C23C8/06; C23C8/08; H; H01; H01B; H01B1/00; H01B11/00; H01B3/00; H01B3/002; H01B3/004; H01B3/02; H01B3/025; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/085; Y; Y10; Y10S; Y10S148/00; Y10S148/034; Y10S148/065; Y10S148/067; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 0
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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) | 1973-03-09 | 1973-09-08 | 1974-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-09 | 1977-09-08 | 1978-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-09 | 1981-09-08 | 1982-03-10 | $7700.00 | Window Closed / Lapsed |