US2443716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface-active nitrosation-sulfitation products
Assignee: Honeywell International Inc
•
Filing: 1943-09-24
•
Granted: 1948-06-22
•
Expires: 1963-09-24
Abstract
No abstract record available.
Inventors
- 👤 Beckham Leland James
- 👤 Fessler William Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:59
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/02; C07C303/04; C07C303/06; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/14; C11D1/143; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03; Y10S516/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2130668A
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US2061601A
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US1842626A
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US2265993A
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US2354359A
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US2336387A
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US2343362A
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US2313719A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-22 | 1951-12-22 | 1952-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-22 | 1955-12-22 | 1956-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-22 | 1959-12-22 | 1960-06-22 | $7700.00 | Window Closed / Lapsed |