Patent US3281470A successfully refreshed from Google Patents.
US3281470A
Expired / Lapsed
US
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Polymeric tertiary amines
Assignee: General Mills Inc
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Filing: 1963-05-01
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Granted: 1966-10-25
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Expires: 1983-05-01
Abstract
No abstract record available.
Inventors
- 👤 Leonard R Vertnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:50
CPC Classifications
C; C07; C07C; C07C211/00; C07C211/01; C07C211/02; C07C211/14; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G73/00; C08G73/02; C08G73/0206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A POLYMER HAVING THE RECURRING STRUCTURAL UNIT
Claim 2
Dependent Claim
7 words
A POLYMER HAVING THE RECURRING STRUCTURAL UNIT
References Cited (Backward Citations)
US3073864A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |