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US2457097A
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US
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Polymeric composition and method of making same
Assignee: Individual
•
Filing: 1944-10-21
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Granted: 1948-12-21
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Expires: 1964-10-21
Abstract
No abstract record available.
Inventors
- 👤 Grotenhuis Theodore A Te
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:20
CPC Classifications
C; C08; C08L; C08L21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1611278A
Cited
GB328812A
Cited
US1906667A
Cited
US1952041A
Cited
US2239659A
Cited
US2354424A
Cited
US2378717A
Cited
US2386583A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |