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US3542918A
Expired / Lapsed
US
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Aminopolyphosphonic acids and polyphosphonic acids and derivatives for the protection of hair
Assignee: Therachemie Chemische Therapeutische GmbH
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Filing: 1966-10-17
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Granted: 1970-11-24
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Expires: 1986-10-17
Abstract
No abstract record available.
Inventors
- 👤 Peter Berth
- 👤 Gunter Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:15
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/08; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/55; A61Q5/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |