US2808622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing nylon articles having improved dimensional stability
Assignee: Polymer Corp
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Filing: 1955-09-23
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Granted: 1957-10-08
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Expires: 1975-09-23
Abstract
No abstract record available.
Inventors
- 👤 Louis L Stott
- 👤 William J Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:52
CPC Classifications
C; C08; C08J; C08J7/00; B; B29; B29B; B29B13/00; B29C; B29C67/00; B29K; B29K2077/00; C08J2377/00; C08J2377/06; Y; Y10; Y10S; Y10S264/00; Y10S264/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN THE MANUFACTURE OF AN ARTICLE OF IMPROVED DIMENSIONAL STABILITY FROM POLYHEXAMETHLENE ADIPAMIDE, THE METHOD WHICH INCLUDES MOLDING AN ARTICLE FROM THE POLYAMIDE WHILE THE POLYAMIDE HAS A MOISTURE CONTENT OF LESS THAN 0.5% BY WEIGHT, HEATING THE MOLDED ARTICLE TO A TEMPERATURE WITHIN A RANGE OF FROM 450* TO 475*F., SLOWLY COOLING SAID ARTICLE TO A TEMPERATURE AT LEAST AS LOW AS THE BOILING POINT OF WATER, ROUGH MACHINING THE ARTICLE, THERAFTER INCREASING THE MOISTURE CONTENT OF THE ARTICLE, TO A POINT ABOVE THE EQUILIBRIUM VALUE FOR THE CONDITIONS OF HUMIDITY UNDER WHICH THE ARTICLE IS TO BE USED, THEREAFTER REDUCING THE MOISTURE CONTENT OF THE ARTICLE TO A MOISTURE CONTENT APPROXIMATING THE EQUILIBRIUM MOISTURE CONTENT FOR THE CONDITIONS UNDER WHICH THE ARTICLE IS TO BE USED, AND THEREAFTER FINISH MACHINING THE ARTICLE.
Claim 2
Dependent Claim
134 words
IN THE MANUFACTURE OF AN ARTICLE OF IMPROVED DIMENSIONAL STABILITY FROM POLYHEXAMETHLENE ADIPAMIDE, THE METHOD WHICH INCLUDES MOLDING AN ARTICLE FROM THE POLYAMIDE WHILE THE POLYAMIDE HAS A MOISTURE CONTENT OF LESS THAN 0.5% BY WEIGHT, HEATING THE MOLDED ARTICLE TO A TEMPERATURE WITHIN A RANGE OF FROM 450* TO 475*F., SLOWLY COOLING SAID ARTICLE TO A TEMPERATURE AT LEAST AS LOW AS THE BOILING POINT OF WATER, ROUGH MACHINING THE ARTICLE, THERAFTER INCREASING THE MOISTURE CONTENT OF THE ARTICLE, TO A POINT ABOVE THE EQUILIBRIUM VALUE FOR THE CONDITIONS OF HUMIDITY UNDER WHICH THE ARTICLE IS TO BE USED, THEREAFTER REDUCING THE MOISTURE CONTENT OF THE ARTICLE TO A MOISTURE CONTENT APPROXIMATING THE EQUILIBRIUM MOISTURE CONTENT FOR THE CONDITIONS UNDER WHICH THE ARTICLE IS TO BE USED, AND THEREAFTER FINISH MACHINING THE ARTICLE.
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) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |