US3492091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aqueous or anhydrous hydrogen chloride free of sulfur dioxide
Assignee: Stauffer Chemical Co
•
Filing: 1967-08-02
•
Granted: 1970-01-27
•
Expires: 1987-08-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas Milton Goldman
- 👤 Robert Lamar Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:12
CPC Classifications
C; C01; C01B; C01B7/00; C01B7/01; C01B7/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1528255A
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US2416011A
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US2762689A
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US3192128A
Cited
GB1041433A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |