US3331884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of 2-methylpentene-2
Assignee: BP PLC
•
Filing: 1961-03-15
•
Granted: 1967-07-18
•
Expires: 1981-03-15
Abstract
No abstract record available.
Inventors
- 👤 Yeo Alan Arthur
- 👤 Hambling James Keith
- 👤 Alderson Geoffrey Winton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:38
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2521/00; C07C2521/18; C07C2523/00; C07C2523/02; C07C2523/04; C07C2527/00; C07C2527/20; C07C2527/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A PROCESS FOR THE PRODUCTION OF 2-METHYLPENTENE-2 WHICH COMPRISES: CONTACTING PROPYLENE WITH A CATALYST CONSISTING ESSENTIALLY OF A LAMELLAR COMPLEX OF POTASSIUM AND GRAPHITE AND HAVING THE FORMULA KCX, WHERE X HAS A VALUE OF AT LEAST 36.
Claim 2
Dependent Claim
38 words
A PROCESS FOR THE PRODUCTION OF 2-METHYLPENTENE-2 WHICH COMPRISES: CONTACTING PROPYLENE WITH A CATALYST CONSISTING ESSENTIALLY OF A LAMELLAR COMPLEX OF POTASSIUM AND GRAPHITE AND HAVING THE FORMULA KCX, WHERE X HAS A VALUE OF AT LEAST 36.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |