US2453352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for inhibiting foam
Assignee: Wyandotte Chemicals Corp
•
Filing: 1945-07-26
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Granted: 1948-11-09
•
Expires: 1965-07-26
Abstract
No abstract record available.
Inventors
- 👤 Henry E Tremain
- 👤 Leslie R Bacon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:48
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0422
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2158959A
Cited
US2386106A
Cited
US1981634A
Cited
US1964641A
Cited
US2079793A
Cited
US2158958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |