Patent US2967855A successfully refreshed from Google Patents.
US2967855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers and process for preparing the same
Assignee: Dow Chemical Co
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Filing: 1957-01-30
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Granted: 1961-01-10
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Expires: 1977-01-30
Abstract
No abstract record available.
Inventors
- 👤 John L Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:44
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS FOR PREPARING THERMOPLASTIC COPOLYMERS COMPRISING THE PREPARATION OF A HOMOGENEOUS MONOMERIC MATERIAL CONSISTING OF FROM 5 TO 50 PERCENT BY WEIGHT OF A FIRST MONOMER HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
31 words
A PROCESS FOR PREPARING THERMOPLASTIC COPOLYMERS COMPRISING THE PREPARATION OF A HOMOGENEOUS MONOMERIC MATERIAL CONSISTING OF FROM 5 TO 50 PERCENT BY WEIGHT OF A FIRST MONOMER HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |