Patent US4685228A successfully refreshed from Google Patents.
Patent US2921081A successfully refreshed from Google Patents.
US2921081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalysis
Assignee: Standard Oil Co
•
Filing: 1956-03-15
•
Granted: 1960-01-12
•
Expires: 1976-03-15
Abstract
No abstract record available.
Inventors
- 👤 Wilford J Zimmerschied
- 👤 Paul N Rylander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:43
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/14; C07C2/18; B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; C07C2/20; C07C2/22; C07C2/54; C07C2/64; C07C2/66; C07C2/70; C07C2521/00; C07C2521/06; C07C2527/00; C07C2527/06; C07C2527/135; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
135 words
A PROCESS FOR THE PRODUCTION OF A SOLID CATALYST REQUIRING NO ADDED SOLID SUPPORTING MATERIAL SUITABLE FOR CATALYZING CONVERSIONS OF OLEFINIC HYDROCARBONS, WHICH PROCESS CONSISTS ESSENTIALLY OF MIXING A ZIRCONUIM COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE HALIDES OF ZIRCONIUM AND ZIRCONIUM DIOXIDE WITH AN ACID OF PHOSPHOROUS SELECTED FROM THE CLASS CONSISTING OF SUBSTANTIALLY ANHYDROUS ORTHOPSPHORIC ACID, PYROPHOSPHORIC ACID AND TRIPHOSPHORIC ACID, SALT HALIDES BEING USED IN PROPORTIONS EQUIVALENT TO ABOUT 0.4 TO ABOUT 0.8 GRAM ATOM OF HALOGEN PER GRAM ATOM OF HYDROGEN IN SAID ACID, AND SAID DIOXIDE BEING USED IN PROPORTIONS EQUILAVENT TO ABOUT 0.2 TO ABOUT 3.0 MOLS PER GRAM ATOM OF PHOSPHORUS CONTAINED IN SAID ACID AND HEATING SAID MIXTURE AT A REACTION TEMPERATURE BETWEEN ABOUT 220* C. AND ABOUT 600* C. TO OBTAIN A DRY, SOLID CATALYST.
Claim 2
Dependent Claim
135 words
A PROCESS FOR THE PRODUCTION OF A SOLID CATALYST REQUIRING NO ADDED SOLID SUPPORTING MATERIAL SUITABLE FOR CATALYZING CONVERSIONS OF OLEFINIC HYDROCARBONS, WHICH PROCESS CONSISTS ESSENTIALLY OF MIXING A ZIRCONUIM COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE HALIDES OF ZIRCONIUM AND ZIRCONIUM DIOXIDE WITH AN ACID OF PHOSPHOROUS SELECTED FROM THE CLASS CONSISTING OF SUBSTANTIALLY ANHYDROUS ORTHOPSPHORIC ACID, PYROPHOSPHORIC ACID AND TRIPHOSPHORIC ACID, SALT HALIDES BEING USED IN PROPORTIONS EQUIVALENT TO ABOUT 0.4 TO ABOUT 0.8 GRAM ATOM OF HALOGEN PER GRAM ATOM OF HYDROGEN IN SAID ACID, AND SAID DIOXIDE BEING USED IN PROPORTIONS EQUILAVENT TO ABOUT 0.2 TO ABOUT 3.0 MOLS PER GRAM ATOM OF PHOSPHORUS CONTAINED IN SAID ACID AND HEATING SAID MIXTURE AT A REACTION TEMPERATURE BETWEEN ABOUT 220* C. AND ABOUT 600* C. TO OBTAIN A DRY, SOLID CATALYST.
Claim 3
Dependent Claim
34 words
A PROCESS FOR THE ALKYLATION OF A NORMALLY GASEOUS OLEFIN, WHICH PROCESS COMPRISES CONTACTING SAID OLEFIN AND AN OLEFIN-ALKYLATABLE COMPOUND WITH A CATALYST PRODUCED BY THE PROCESS OF CLAIM 1 UNDER THE ALKYLATING CONDITIONS.
Claim 4
Dependent Claim
11 words
THE PROCESS OF CLAIM 17 WHEREIN SAID OLEFINALKYLATABLE COMPOUND IS THIOPHENE.
References Cited (Backward Citations)
US2230648A
Cited
US2349243A
Cited
US2639286A
Cited
US2656323A
Cited
US2650201A
Cited
US2727010A
Cited
US2772244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |