US3300448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide of enhanced dyeability containing phenyl phosphonic acid and nu-amino ethylpiperazine
Assignee: Monsanto Co
•
Filing: 1963-09-09
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Granted: 1967-01-24
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Expires: 1983-09-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Roger A Gauthier
- 👤 Jr Rupert J Snooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:21
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; Y; Y10; Y10S; Y10S264/00; Y10S264/26; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A POLYHEXAMETHYLENE ADIPAMIDE FILAMENT MADE MORE DEEPLY DYEABLE BY HAVING INCORPORATED THEREIN ON A WEIGHT BASIS ABOUT 0.2-1.0 PERCENT PHENYLPHOSPHINIC ACID AND ABOUT 0.2-1.0 PERCENT N-(2-AMINOETHYL) PIPERAZINE.
Claim 2
Dependent Claim
27 words
A POLYHEXAMETHYLENE ADIPAMIDE FILAMENT MADE MORE DEEPLY DYEABLE BY HAVING INCORPORATED THEREIN ON A WEIGHT BASIS ABOUT 0.2-1.0 PERCENT PHENYLPHOSPHINIC ACID AND ABOUT 0.2-1.0 PERCENT N-(2-AMINOETHYL) PIPERAZINE.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |