Patent US3402142A successfully refreshed from Google Patents.
US3402142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl aromatic polymers stabilized by phosphorus compounds
Assignee: Monsanto Co
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Filing: 1964-07-23
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Granted: 1968-09-17
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Expires: 1984-07-23
Abstract
No abstract record available.
Inventors
- 👤 Archie E Follett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:31
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5393
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A COMPOSITION OF MATTER WHICH COMPRISES A CRYSTALLINE POLYMER SELECTED FROM THE GROUP CONSISTING OF A HOMOPOLYMER OF A VINYL AROMATIC HYDROCARBON MONOMER AND COPOLYMERS OF SAID VINYL AROMATIC HYDROCARBON MONOMER WITH AT LEAST ONE OTHER VINYL AROMATIC MONOMER AND A STABILIZING QUANTITY OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF METAL SALTS OF COMPOUNDS HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
60 words
A COMPOSITION OF MATTER WHICH COMPRISES A CRYSTALLINE POLYMER SELECTED FROM THE GROUP CONSISTING OF A HOMOPOLYMER OF A VINYL AROMATIC HYDROCARBON MONOMER AND COPOLYMERS OF SAID VINYL AROMATIC HYDROCARBON MONOMER WITH AT LEAST ONE OTHER VINYL AROMATIC MONOMER AND A STABILIZING QUANTITY OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF METAL SALTS OF COMPOUNDS HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
BE621316A
Cited
US2230371A
Cited
US2784169A
Cited
US2952658A
Cited
US2959568A
Cited
US3214396A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |