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Patent US3576750A successfully refreshed from Google Patents.
US3576750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for polishing acrylic materials
Assignee: Indiana University Foundation Inc
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Filing: 1969-04-30
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Granted: 1971-04-27
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Expires: 1989-04-30
Abstract
Abstract IMPROVED ACRYLIC POLISHING PREPARATIONS EMPLOY A MAJOR AMOUNT OF ZIRCONIUM SILICATE (ZRSIO4) AND MINOR AMOUNTS OF MICRONIZED ZIRCNIUM DIOXIDE (ZRO2) AND ZIRCONIUM OXYCHLORIDE (ZROCL2.8420). SUCH PREPARATIONS ARE ESPECIALLY USEFUL IN DENTURE CLEANSER COMPOSITIONS AND IN OTHER AGENTS USEFUL IN CLEANING AND POLISHING ACRYLIC RESIN MATERIALS AND THE LIKE.
Inventors
- 👤 Joseph C Muhler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:21
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1454; C09K3/1481; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/1213; C11D3/124; C11D3/1246
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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |