Patent US681753A successfully refreshed from Google Patents.
Patent US2944044A successfully refreshed from Google Patents.
US2944044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer blend of a carboxyl-containing monovinylidene aromatic polymer and a carboxyl-containing conjugated 1, 3-diene polymer
Assignee: Monsanto Chemicals Ltd
•
Filing: 1958-06-09
•
Granted: 1960-07-05
•
Expires: 1978-06-09
Abstract
No abstract record available.
Inventors
- 👤 Baer Massimo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:03
CPC Classifications
C; C08; C08L; C08L25/00; C08L13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
AN INTIMATE BLEND OF THERMOPLASTIC POLYMERIC MATERIALS CONSISTING ESSENTIALLY OF (1) GREATER THAN 50% OF A RIGID, WATER-INSOLUBLE POLYMER OF A MONOVINYLIDENE AROMATIC COMPOUND CONTAINING AN AVERAGE OF 3-35 CARBOXYL GROUPS PER EACH 100 MONOMERIC UNITS IN THE POLYMER CHAIN AND (2) LESS THAN 50% BY WEIGHT OF A RUBBERY POLYMER OF A CONJUGATED 1,3-DIENE CONTAINING AN AVERAGE OF 1.5-30 CARBOXYL GROUPS PER EACH 100 MONOMERIC UNITS IN THE POLYMER CHAIN, SAID CONJUGATED 1,3DIENE CONFORMING TO THE FORMULA:
Claim 2
Dependent Claim
78 words
AN INTIMATE BLEND OF THERMOPLASTIC POLYMERIC MATERIALS CONSISTING ESSENTIALLY OF (1) GREATER THAN 50% OF A RIGID, WATER-INSOLUBLE POLYMER OF A MONOVINYLIDENE AROMATIC COMPOUND CONTAINING AN AVERAGE OF 3-35 CARBOXYL GROUPS PER EACH 100 MONOMERIC UNITS IN THE POLYMER CHAIN AND (2) LESS THAN 50% BY WEIGHT OF A RUBBERY POLYMER OF A CONJUGATED 1,3-DIENE CONTAINING AN AVERAGE OF 1.5-30 CARBOXYL GROUPS PER EACH 100 MONOMERIC UNITS IN THE POLYMER CHAIN, SAID CONJUGATED 1,3DIENE CONFORMING TO THE FORMULA:
References Cited (Backward Citations)
US2419202A
Cited
US2457097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |