US3424812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst preparation
Assignee: BP PLC
•
Filing: 1966-04-07
•
Granted: 1969-01-28
•
Expires: 1986-04-07
Abstract
No abstract record available.
Inventors
- 👤 Eric James Howman
- 👤 Christopher Patrick C Bradshaw
- 👤 Leonard Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:19
CPC Classifications
C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/32; B01J23/36; B01J37/00; B01J37/02; B01J37/0238; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/16; C07C2523/32; C07C2523/36; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
34 words
A PROCESS FOR THE PREPARATION OF A RHENIUM HEPTOXIDE CATALYST WHICH PROCESS COMPRISES HEATING RHENIUM HEPTOXIDE IN A STREAM OF CARRIER GAS WHEREBY IT IS SUBLIMED ONTO ALUMINA LOCATED DOWNSTREAM OF THE RHENIUM HEPTOXIDE.
Claim 2
Dependent Claim
34 words
A PROCESS FOR THE PREPARATION OF A RHENIUM HEPTOXIDE CATALYST WHICH PROCESS COMPRISES HEATING RHENIUM HEPTOXIDE IN A STREAM OF CARRIER GAS WHEREBY IT IS SUBLIMED ONTO ALUMINA LOCATED DOWNSTREAM OF THE RHENIUM HEPTOXIDE.
Claim 3
Dependent Claim
37 words
A PROCESS FOR THE DISPROPORTIONATION OF AN ACYCLIC OLEFIN WHICH PROCESS COMPRISES CONTACTING AN ACYCLIC OLEFIN WITH A DISPROPORTIONATION CATALYST PREPARED ACCORDING TO CLAIM 1, UNDER CONDITIONS OF TEMPERATURE AND PRESSURE WHICH EFFECT DISPROPORTIONATION OF THE FEED.
References Cited (Backward Citations)
US3261879A
Cited
GB1054864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |