Patent US2885381A successfully refreshed from Google Patents.
US2885381A
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Mineral reinforcing agents in conjugated diene/heterocyclic nitrogen base copolymers
Assignee: Phillips Petroleum Co
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Filing: 1955-12-30
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Granted: 1959-05-05
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Expires: 1975-12-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Svetlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:49
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/01; C08K3/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A COMPOSITION OF MATTER COMPRISING A COPOLYMER OF A CONJUGATED DIENE AND A HETERRCYCLIC NITROGEN CONTAINING MONOMER HAVING A SOLE CH2=C$ SUBSTITUENT, SAID COPOLYMER HAVING BEEN COMPOUNDED WITH 25-100 WEIGHT PARTS PER 100 PARTS OF SAID COPOLYMER OF A FINELY GROUND MINERAL PIGMENT SELECTED FROM THE GROUP CONSISTING OF SILICA AND ALUMINUM SILICATE AS THE SOLE REINFORCING AGENT.
Claim 2
Dependent Claim
58 words
A COMPOSITION OF MATTER COMPRISING A COPOLYMER OF A CONJUGATED DIENE AND A HETERRCYCLIC NITROGEN CONTAINING MONOMER HAVING A SOLE CH2=C$ SUBSTITUENT, SAID COPOLYMER HAVING BEEN COMPOUNDED WITH 25-100 WEIGHT PARTS PER 100 PARTS OF SAID COPOLYMER OF A FINELY GROUND MINERAL PIGMENT SELECTED FROM THE GROUP CONSISTING OF SILICA AND ALUMINUM SILICATE AS THE SOLE REINFORCING AGENT.
References Cited (Backward Citations)
US2402020A
Cited
US2429439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-04 | 1962-11-03 | 1963-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-04 | 1966-11-03 | 1967-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-04 | 1970-11-03 | 1971-05-05 | $7700.00 | Window Closed / Lapsed |