US3459657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the selective hydrogenation of pyrolysis gasoline
Assignee: Bayer AG
•
Filing: 1966-05-04
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Granted: 1969-08-05
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Expires: 1986-05-04
Abstract
No abstract record available.
Inventors
- 👤 Walter Kronig
- 👤 Kurt Halcour
- 👤 Gerhard Scharfe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:49
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/02; B01J8/06; B01J23/00; B01J23/38; B01J23/40; B01J23/54; B01J23/56; B01J23/70; B01J23/89; B01J23/8913; B01J21/00; B01J21/005; B01J35/00; B01J35/60; B01J35/61; B01J35/613; B01J35/64; B01J35/647; B01J35/651; B01J37/00; B01J37/02; B01J37/03; C; C10; C10G; C10G2400/00; C10G2400/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |