Patent US3615428A successfully refreshed from Google Patents.
US3036133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of sulfur compounds
Assignee: Pennwalt Corp
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Filing: 1960-07-25
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Granted: 1962-05-22
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Expires: 1980-07-25
Abstract
No abstract record available.
Inventors
- 👤 Roland H Goshorn
- 👤 Thomas E Deger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:29
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/02; C07C319/04; B; B01; B01J; B01J27/00; B01J27/14; B01J27/186; B01J27/188; C07C319/14; C07C319/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE PROCESS OF REACTING HYDROGEN SULFIDE WITH ETHYLENE AT A TEMPERATURE BELOW ABOUT 400*C. IN THE PRESENCE OF A CATALYST COMPRISING A DEHYDRATION CATALYST SELECTED FROM THE GROUP OF ALUMINA AND SILICA PROMOTED WITH AN ACTIVATING AMOUNT OF A COMPOUND SELECTED FROM THE GROUP OF HETEROPOLY ACIDS, ALKALI METAL SALTS OF HETEROPOLY ACIDS, AND ALKALINE EARTH METAL SALTS OF HETEROPOLY ACIDS.
Claim 2
Dependent Claim
61 words
THE PROCESS OF REACTING HYDROGEN SULFIDE WITH ETHYLENE AT A TEMPERATURE BELOW ABOUT 400*C. IN THE PRESENCE OF A CATALYST COMPRISING A DEHYDRATION CATALYST SELECTED FROM THE GROUP OF ALUMINA AND SILICA PROMOTED WITH AN ACTIVATING AMOUNT OF A COMPOUND SELECTED FROM THE GROUP OF HETEROPOLY ACIDS, ALKALI METAL SALTS OF HETEROPOLY ACIDS, AND ALKALINE EARTH METAL SALTS OF HETEROPOLY ACIDS.
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) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |