US3504041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonionic condensation products having enhanced activity
Assignee: Wyandotte Chemicals Corp
•
Filing: 1966-02-14
•
Granted: 1970-03-31
•
Expires: 1986-02-14
Abstract
No abstract record available.
Inventors
- 👤 Eugene A Weipert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:44
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/722; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2575298A
Cited
US3185562A
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US3203955A
Cited
US3382285A
Cited
US3356612A
Cited
US3340309A
Cited
US3328306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |