US3410649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic resins which are the reaction product of formaldehyde and the reaction product of amino bases with a methylolated amine salt
Assignee: Diamond Shamrock Chemicals Co
•
Filing: 1967-03-01
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Granted: 1968-11-12
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Expires: 1987-03-01
Abstract
No abstract record available.
Inventors
- 👤 Sellet Lucien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:15
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/14; C08C1/15; C08G; C08G12/00; C08G12/02; C14; C14C; C14C3/00; C14C3/02; C14C3/08; C14C3/18; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2267290A
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US2440988A
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US2550638A
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US2741535A
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US2774749A
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US2847396A
Cited
US2950268A
Cited
US2864781A
Cited
US3206435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |