US3065058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of sulfur trioxide
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-09-16
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Granted: 1962-11-20
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Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Randolph Perry
- 👤 Kenneth J Shaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:09
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A COMPOSITION OF MATTER COMPRISING LIQUID SULFUR TRIOXIDE HAVING HAD ADDED THERETO A MINOR AMOUNT LESS THAN ABOUT 5 WEIGHT PERCENT OF A COMPOUND OF THE FOLLOWING CLASS:
Claim 2
Dependent Claim
28 words
A COMPOSITION OF MATTER COMPRISING LIQUID SULFUR TRIOXIDE HAVING HAD ADDED THERETO A MINOR AMOUNT LESS THAN ABOUT 5 WEIGHT PERCENT OF A COMPOUND OF THE FOLLOWING CLASS:
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) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |