Patent US956286A successfully refreshed from Google Patents.
Patent US3149151A successfully refreshed from Google Patents.
US3149151A
Expired / Lapsed
US
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Per-compounds of acylation products of phosphorous acid
Assignee: Henkel AG and Co KGaA
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Filing: 1961-03-14
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Granted: 1964-09-15
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Expires: 1981-03-14
Abstract
No abstract record available.
Inventors
- 👤 Schiefer Joachim
- 👤 Weldes Friedrich
- 👤 Worms Karl-Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:50
CPC Classifications
C; C07; C07C; C07C407/00; C01; C01B; C01B15/00; C01B15/055; C01B15/16; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/3804; C07F9/3839; C07F9/386; C11; C11D; C11D3/00; C11D3/39; C11D3/3945; D; D06; D06L; D06L4/00; D06L4/10; D06L4/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |