Patent US3400167A successfully refreshed from Google Patents.
US3400167A
Expired / Lapsed
US
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Hydrogenation of a dealkylated aromatic compound
Assignee: Gulf Research and Development Co
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Filing: 1966-02-10
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Granted: 1968-09-03
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Expires: 1986-02-10
Abstract
No abstract record available.
Inventors
- 👤 Alfred M Henke
- 👤 William C Offutt
- 👤 Raynor T Sebulsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:55
CPC Classifications
C; C07; C07C; C07C13/00; C07C13/02; C07C13/16; C07C13/18; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/16; C07C5/00; C07C5/02; C07C5/10; C07C7/00; C07C7/148; C07C2523/00; C07C2523/16; C07C2523/24; C07C2523/28; C07C2523/30; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/70; C07C2523/74; C07C2523/75; C07C2523/755; C07C2601/00; C07C2601/12; C07C2601/14; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
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) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |