Patent US6287201B1 successfully refreshed from Google Patents.
Patent US3214414A successfully refreshed from Google Patents.
US3214414A
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Process for the manufacture of polyamide bodies having uniform finely crystalline structure
Assignee: Inventa AG fuer Forschung und Patentverwertung
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Filing: 1962-09-21
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Granted: 1965-10-26
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Expires: 1982-09-21
Abstract
No abstract record available.
Inventors
- 👤 Waltersperger Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:16
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16; C08K; C08K3/00; C08K3/01; C08K3/18; C08K3/20; C08K3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A PROCESS FOR THE MANUFACTURE OF POLY-E-CAPROLACTAM HAVING A HOMOGENEOUS, UNIFORM, FINELY CRYSTALLINE AND CONTINUOUS SPHERULITIC STRUCTURE WITH A MINIMUM OF INTERNAL STRESSES, WHICH COMPRISES ADDING TO AN AQUEOUS SOLUTION OF E-CAPROLACTAM, IN AMOUNTS OF 0.05 TO 0.1 PERCENT OF POLY-E-CAPROLACTAM FORMED, AN AQUEOUS SOLUTION OF SEEDING NUCLEUS FORMERS SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
55 words
A PROCESS FOR THE MANUFACTURE OF POLY-E-CAPROLACTAM HAVING A HOMOGENEOUS, UNIFORM, FINELY CRYSTALLINE AND CONTINUOUS SPHERULITIC STRUCTURE WITH A MINIMUM OF INTERNAL STRESSES, WHICH COMPRISES ADDING TO AN AQUEOUS SOLUTION OF E-CAPROLACTAM, IN AMOUNTS OF 0.05 TO 0.1 PERCENT OF POLY-E-CAPROLACTAM FORMED, AN AQUEOUS SOLUTION OF SEEDING NUCLEUS FORMERS SELECTED FROM THE GROUP CONSISTING OF
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |