Patent US3025323A successfully refreshed from Google Patents.
US3025323A
Expired / Lapsed
US
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Amide diols and their esters
Assignee: Union Carbide Corp
•
Filing: 1957-01-18
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Granted: 1962-03-13
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Expires: 1977-01-18
Abstract
No abstract record available.
Inventors
- 👤 Julian K Rose
- 👤 Helmut W Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:45
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/07; C; C07; C07C; C07C235/00; C07C235/02; C07C235/04; C07C235/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
2 words
N,N''-DI(6-HYDROXYCAPROYL) HEXAMETHYLENEDIAMINE.
Claim 2
Dependent Claim
2 words
N,N''-DI(6-HYDROXYCAPROYL) HEXAMETHYLENEDIAMINE.
Claim 3
Dependent Claim
4 words
DIAMIDE-DIOLS HAVING THE FORMULA:
Claim 4
Dependent Claim
4 words
DIAMIDE-DIOLS HAVING THE FORMULA:
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |