US3070580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystalline poly (methylene sulfide) and process for its preparation
Assignee: EIDP Inc
•
Filing: 1959-07-16
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Granted: 1962-12-25
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Expires: 1979-07-16
Abstract
No abstract record available.
Inventors
- 👤 Harmon Jesse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:28
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/02; C08G75/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
AS A COMPOSITION OF MATTER, A NORMALLY SOLID, THERMOPLASTIC, CRYSTALLINE, FIBER-FORMING POLY(METHYLENE SULFIDE) HAVING THE STRUCTURE CONSISTING ESSENTIALLY OF RECURRING-CH2S- UNITS AND HAVING A MELTING POINT OF AT LEAST 220*C.
Claim 2
Dependent Claim
30 words
AS A COMPOSITION OF MATTER, A NORMALLY SOLID, THERMOPLASTIC, CRYSTALLINE, FIBER-FORMING POLY(METHYLENE SULFIDE) HAVING THE STRUCTURE CONSISTING ESSENTIALLY OF RECURRING-CH2S- UNITS AND HAVING A MELTING POINT OF AT LEAST 220*C.
References Cited (Backward Citations)
CA480360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |