Patent US2429960A successfully refreshed from Google Patents.
US2429960A
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Press
Assignee: Celanese Corp
•
Filing: 1944-09-20
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Granted: 1947-10-28
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Expires: 1964-09-20
Abstract
No abstract record available.
Inventors
- 👤 Rene P Piperoux
- 👤 Dimitri G Soussloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:45
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/30; B29C51/38; B29C51/08; B29C51/32; B30; B30B; B30B1/00; B30B1/26; B30B1/261; B31; B31B; B31B50/00; B31B50/59; B31B50/592
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US924555A
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US1273009A
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US1253316A
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US1880858A
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US1904268A
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US2255116A
Cited
US2347272A
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US2346212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-27 | 1951-04-28 | 1951-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-27 | 1955-04-28 | 1955-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-27 | 1959-04-28 | 1959-10-28 | $7700.00 | Window Closed / Lapsed |