US2564795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preservation of butadiene polymers with mercaptals of hydroxy aldehydes
Assignee: Monsanto Chemicals Ltd
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Filing: 1948-09-21
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Granted: 1951-08-21
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Expires: 1968-09-21
Abstract
No abstract record available.
Inventors
- 👤 Robert L Sibley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
THE METHOD OF PRESERVING A RUBBERY POLYMER PREPARED BY THE POLYMERIZATION OF BUTADIENE1,3 AND STYRENE WHICH COMPRISES INCORPORATING INTO THE PREFORMED POLYMER 1-3 PERCENT BASED ON THE POLYMER OF A MERCAPTAL OF A HYDROXY ALDEHYDE.
Claim 2
Independent Claim
35 words
THE METHOD OF PRESERVING A RUBBERY POLYMER PREPARED BY THE POLYMERIZATION OF BUTADIENE1,3 AND STYRENE WHICH COMPRISES INCORPORATING INTO THE PREFORMED POLYMER 1-3 PERCENT BASED ON THE POLYMER OF A MERCAPTAL OF A HYDROXY ALDEHYDE.
References Cited (Backward Citations)
US2380475A
Cited
US2380905A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-20 | 1955-02-19 | 1955-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-20 | 1959-02-19 | 1959-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-20 | 1963-02-19 | 1963-08-21 | $7700.00 | Window Closed / Lapsed |