Patent US3025689A successfully refreshed from Google Patents.
US3025689A
Expired / Lapsed
US
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Hosiery articles knitted from polypropylene yarn
Assignee: Montedison SpA
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Filing: 1957-09-16
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Granted: 1962-03-20
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Expires: 1977-09-16
Abstract
No abstract record available.
Inventors
- 👤 Beghelli Benito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:13
CPC Classifications
D; D04; D04B; D04B1/00; D04B1/22; D04B1/24; D04B1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
AS A NEW ARTICLE OF MANUFACTURE, HOSEIRE COMPRISED OF KNITTED YARNS OF POLYPROPYLENE HAVING AN INTRINSIC VISCOSITY BETWEEN ABOUT 0.3 AND ABOUT 2.0 AND CONSISTING ESSENTIALLY OF ISOTACTIC MACROMOLECULES AND DISTINCT AND SEPARABLE LINEAR, REGULARLY HEAD-TO-TAIL ATACTIC MACROMOLECULES, THE ISOTACTIC MACROMOLECULES CONSTITUTING AT LEAST 80% BY WEIGHT OF THE POLYPROPYLENE AND THE ATACTIC
Claim 2
Dependent Claim
53 words
AS A NEW ARTICLE OF MANUFACTURE, HOSEIRE COMPRISED OF KNITTED YARNS OF POLYPROPYLENE HAVING AN INTRINSIC VISCOSITY BETWEEN ABOUT 0.3 AND ABOUT 2.0 AND CONSISTING ESSENTIALLY OF ISOTACTIC MACROMOLECULES AND DISTINCT AND SEPARABLE LINEAR, REGULARLY HEAD-TO-TAIL ATACTIC MACROMOLECULES, THE ISOTACTIC MACROMOLECULES CONSTITUTING AT LEAST 80% BY WEIGHT OF THE POLYPROPYLENE AND THE ATACTIC
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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) | 1965-03-19 | 1965-09-18 | 1966-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-19 | 1969-09-18 | 1970-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-19 | 1973-09-18 | 1974-03-20 | $7700.00 | Window Closed / Lapsed |