Patent US3787474A successfully refreshed from Google Patents.
US3787474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linked polymers
Assignee: Inveresk Res International
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Filing: 1970-09-10
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Granted: 1974-01-22
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Expires: 1990-09-10
Abstract
Abstract THE INVENTION RELATES TO NOVEL CROSS-LINKED POLYMERS WHICH, WHEN ADMINISTERED TO HUMANS HAVE THE PROPERTY OF LOWERING AND CONTROLLING THE CHOLESTEROL LEVEL OF THE BLOOD. THE INVENTION PROVIDES NOVEL POLYMERS WHICH ARE DERIVED FROM A POLYMERIZABLE MONOMER CONTAINING A QUATERNARY AMMONIUM GROUP CROSS-LINKED WITH A POLYFUNCTIONAL MONOMER CONTAINING TWO OR MORE UNSATURATED GROUPS.
Inventors
- 👤 P Daniels
- 👤 Sim A Kennedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:48
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; A; A61; A61K; A61K31/00; A61K31/74; A61K31/785; C08F20/08; C08F36/00; C08F36/02; C08F36/20
Claims Analysis
Total Claims: 0
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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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |