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US2832671A
Expired / Lapsed
US
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Stabilization of liquid sulfur trioxide
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-03-29
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Granted: 1958-04-29
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Expires: 1977-03-29
Abstract
No abstract record available.
Inventors
- 👤 Kenneth J Shaver
- 👤 Jr Randolph Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:17
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/69; C01B17/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
A METHOD OF STABILIZING LIQUID SULFUR TRIOXIDE TO SUBSTANTIALLY INHIBIT THE POLYMERIZATION THEREOF COMPRISING INCORPORATING THEREIN A MINOR AMOUNT OF DIMETHYL SULFITE SUFFICIENT TO STABILIZE SAID LIQUID SULFUR TRIOXIDE.
Claim 2
Independent Claim
29 words
A METHOD OF STABILIZING LIQUID SULFUR TRIOXIDE TO SUBSTANTIALLY INHIBIT THE POLYMERIZATION THEREOF COMPRISING INCORPORATING THEREIN A MINOR AMOUNT OF DIMETHYL SULFITE SUFFICIENT TO STABILIZE SAID LIQUID SULFUR TRIOXIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |