US3640879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning composition and method of using same
Assignee: LRC RESEARCH AND DEV CO
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Filing: 1969-05-28
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Granted: 1972-02-08
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Expires: 1989-05-28
Abstract
Abstract A CLEANING COMPOSITION ESPECIALLY SUITED FOR USE IN CLEANING DENTAL PROSTHETIC DEVICES COMPRISING A MIXTURE OF LITHIUM HYPOCHLORITE, A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL PYROSULFATE, ALKALI METAL BISULFATE AND MIXTURES THEREOF, AN ALKALI METAL HYDROXIDE AND, PERFERABLY, A SURFACE ACTIVE AGENT.
Inventors
- 👤 Walter P Fitzgerald Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:12
CPC Classifications
A; A61; A61Q; A61Q11/00; A61Q11/02; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K8/23; C; C11; C11D; C11D3/00; C11D3/02; C11D3/04; C11D3/044; C11D3/046; C11D3/395; C11D3/3953; C11D3/3956; D; D21; D21C; D21C9/00; D21C9/10; D21C9/12
Claims Analysis
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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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |