US3757804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Product for treating hair
Assignee: FR SA
•
Filing: 1968-07-18
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Granted: 1973-09-11
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Expires: 1988-07-18
Abstract
Abstract New product for treating hair which comprises at least one methylol compound capable of polycondensation or polyaddition which comprises a group responding to the formula: IN WHICH R represents H, a lowr alkyl, hydroxymethyl, or alkoxymethyl, and R'' represents H, or a lower alkyl, said N being attached to a remainder which is sufficiently electrophile to prevent the immediate release of formol; and AN ALKALINE SALT OF A SULPHUR ACID IN WHICH THE SULPHUR IS AT THE FOURTH DEGREE OF OXIDATION AND CAPABLE OF FORMING A STABLE COMPOUND WITH FORMOL.
Inventors
- 👤 G Kalopissis
- 👤 Beaulieu De
- 👤 J Abegg
- 👤 G Ghilardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:48
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/06; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2372159A
Cited
US2655923A
Cited
US2836543A
Cited
US2836185A
Cited
US3068151A
Cited
US3149042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |