US3454647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing bis(beta hydroxypropyl) ethylene diamine
Assignee: Progressive Products Corp
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Filing: 1966-09-13
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Granted: 1969-07-08
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Expires: 1986-09-13
Abstract
No abstract record available.
Inventors
- 👤 Paul W Kersnar
- 👤 Samuel Taormina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:53
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/02; D06L1/04; C; C11; C11D; C11D1/00; C11D1/02; C11D1/12; C11D1/22; C11D3/00; C11D3/16; C11D3/26; C11D3/30; C11D9/00; C11D9/02; C11D9/04; C11D9/22; C11D9/30; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141; C23F11/142
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |