US2574221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming a multilayered mat of intercrossed filaments
Assignee: Johns Manville Corp
•
Filing: 1946-03-16
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Granted: 1951-11-06
•
Expires: 1966-03-16
Abstract
No abstract record available.
Inventors
- 👤 Modigliani Piero
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:32
CPC Classifications
B; B29; B29C; B29C70/00; D; D04; D04H; D04H3/00; D04H3/02; B29K; B29K2309/00; B29K2309/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
THE METHOD COMPRISING FORMING A MULTILAYER MAT OF INTERCROSSED FILAMENTS, STRETCHING SAID MAT, ACCUMULATING A SECOND FILAMENTARY MAT ON SAID FIRST MAT WITH THE FILAMENTS OF SAID
Claim 2
Independent Claim
27 words
THE METHOD COMPRISING FORMING A MULTILAYER MAT OF INTERCROSSED FILAMENTS, STRETCHING SAID MAT, ACCUMULATING A SECOND FILAMENTARY MAT ON SAID FIRST MAT WITH THE FILAMENTS OF SAID
References Cited (Backward Citations)
US1771216A
Cited
GB323790A
Cited
US2015006A
Cited
US2117371A
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US2131024A
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US2081060A
Cited
US2306347A
Cited
US2315851A
Cited
US2397936A
Cited
US2399258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |