US3498749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metal carbonyls and carbon black
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1966-12-23
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Granted: 1970-03-03
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Expires: 1986-12-23
Abstract
No abstract record available.
Inventors
- 👤 Clyde L Aldridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; B; B01; B01J; B01J23/00; B01J23/90; B01J23/94; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B66F9/186; C01; C01G; C01G1/00; C01G1/04; C01G53/00; C01G53/02; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
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) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |