US2509741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of filamentous structures
Assignee: EIDP Inc
•
Filing: 1944-10-27
•
Granted: 1950-05-30
•
Expires: 1964-10-27
Abstract
No abstract record available.
Inventors
- 👤 John B Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:23
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/52; D06M13/53; B; B60; B60C; B60C9/00; B60C9/0042; D01; D01F; D01F6/00; D01F6/58; D01F6/60; D02; D02J; D02J1/00; D02J1/22; D02J1/223; D02J1/224; D02J1/229; D06M13/10; D06M13/144; D06M13/148; D06M13/152; D06M13/184; D06M13/188; D06M13/244; D06M13/248; D06M13/268; D06M13/322; D06M13/392; Y; Y10; Y10S; Y10S264/00; Y10S264/73; Y10S57/00; Y10S57/902; Y10S8/00; Y10S8/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE PROCESS OF PRODUCING A TWISTED SYNTHETIC LINEAR POLYMER CORD STRUCTURE HAVING A LOW THERMO-EXTENSIBILITY AND INFLATION GROWTH WHICH COMPRISES SUBJECTING A SYNTHETIC LINEAR POLYMER YARN IN ITS COMPLETELY DRAWN STATE, TO A DRY HEAT TREATMENT AT A TEMPERATURE BETWEEN 100*C. AND ABOUT 5*C. BELOW THE MELTING POINT OF THE POLYMER WHILE THE YARN HAS A STRETCH OF AT LEAST 0.5%, COOLING THE YARN TO A TEMPERATURE AT LEAST 5% LOWER THAN SAID TREATMENT CENTIGRADE TEMPERATURE WHILE MAINTAINING THE STRUCTURE IN SAID STRETCHED CONDITION, PLYING AND TWISTING AT LEAST TWO OF SAID YARNS TO PRODUCE A CORD, SUBJECTING SAID CORD TO A DRY HEAT TREATMENT AT A TEMPERA-
Claim 2
Dependent Claim
108 words
THE PROCESS OF PRODUCING A TWISTED SYNTHETIC LINEAR POLYMER CORD STRUCTURE HAVING A LOW THERMO-EXTENSIBILITY AND INFLATION GROWTH WHICH COMPRISES SUBJECTING A SYNTHETIC LINEAR POLYMER YARN IN ITS COMPLETELY DRAWN STATE, TO A DRY HEAT TREATMENT AT A TEMPERATURE BETWEEN 100*C. AND ABOUT 5*C. BELOW THE MELTING POINT OF THE POLYMER WHILE THE YARN HAS A STRETCH OF AT LEAST 0.5%, COOLING THE YARN TO A TEMPERATURE AT LEAST 5% LOWER THAN SAID TREATMENT CENTIGRADE TEMPERATURE WHILE MAINTAINING THE STRUCTURE IN SAID STRETCHED CONDITION, PLYING AND TWISTING AT LEAST TWO OF SAID YARNS TO PRODUCE A CORD, SUBJECTING SAID CORD TO A DRY HEAT TREATMENT AT A TEMPERA-
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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) | 1953-05-29 | 1953-11-28 | 1954-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-29 | 1957-11-28 | 1958-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-29 | 1961-11-28 | 1962-05-30 | $7700.00 | Window Closed / Lapsed |