US3845006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoresin-silica microcomposites
Assignee: NL Chemicals Inc
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Filing: 1973-05-07
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Granted: 1974-10-29
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Expires: 1993-05-07
Abstract
Abstract 1. A COPOLYMERIZED COMPOSITE COMPRISING POLYSILIC ACID AND POLYMERIC AMINORESIN; SAID COMPOSITE HAVING A PARTICLE SIZE RANGE FROM 1U TO 50U; SAID COPOLYMERIZED COMPOSITE CONTAINING FROM 40% TO 99% OF POLYSILICIC ACID, CALCULATED AS SILICA BY WEIGHT, THE REMAINDER BEING THE AMINORESIN POLYMER, SAID AMINORESIN POLYMER CONTAINING 0.5-2.0 MOLES OF FORMALDEHYDE FOR EACH MOLE OF AMINO EMPLOYED.
Inventors
- 👤 M Erneta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:26
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/28; C09C1/30; C08; C08K; C08K3/00; C08K3/34; C08K3/36; C01; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/34; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/11; C01P2006/12; C01P2006/20; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A COPOLYMERIZED COMPOSITE COMPRISING POLYSILIC ACID AND POLYMERIC AMINORESIN; SAID COMPOSITE HAVING A PARTICLE SIZE RANGE FROM 1U TO 50U; SAID COPOLYMERIZED COMPOSITE CONTAINING FROM 40% TO 99% OF POLYSILICIC ACID, CALCULATED AS SILICA BY WEIGHT, THE REMAINDER BEING THE AMINORESIN POLYMER, SAID AMINORESIN POLYMER CONTAINING 0.5-2.0 MOLES OF FORMALDEHYDE FOR EACH MOLE OF AMINO EMPLOYED.
Claim 2
Dependent Claim
56 words
A COPOLYMERIZED COMPOSITE COMPRISING POLYSILIC ACID AND POLYMERIC AMINORESIN; SAID COMPOSITE HAVING A PARTICLE SIZE RANGE FROM 1U TO 50U; SAID COPOLYMERIZED COMPOSITE CONTAINING FROM 40% TO 99% OF POLYSILICIC ACID, CALCULATED AS SILICA BY WEIGHT, THE REMAINDER BEING THE AMINORESIN POLYMER, SAID AMINORESIN POLYMER CONTAINING 0.5-2.0 MOLES OF FORMALDEHYDE FOR EACH MOLE OF AMINO EMPLOYED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |