US2643375A
Expired / Lapsed
US
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Method of treating hair
Assignee: Northwestern Res Corp
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Filing: 1951-12-26
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Granted: 1953-06-23
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Expires: 1971-12-26
Abstract
No abstract record available.
Inventors
- 👤 Virgil A Gant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:54
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/06; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/84; A61K8/89; A61K8/891; Y; Y10; Y10S; Y10S8/00; Y10S8/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
THE METHOD OF SETTING THE HAIR ON THE HUMAN HEAD COMPRISING THE STEPS OF TREATING THE HAIR WITH A THERMOSETTING ORGANO-SILICON POLYMER REACTED TO AN INTERMEDIATE STAGE OF POLYMERIC GROWTH AND AN ORGANO-SILICON FLUID, AND THEN HEATING THE TREATED HAIR TO ADVANCE THE POLYMER WHILE THE HAIR IS BEING POSITIONED IN THE ARRANGEMENT IN WHICH IT IS TO BE SET.
Claim 2
Independent Claim
60 words
THE METHOD OF SETTING THE HAIR ON THE HUMAN HEAD COMPRISING THE STEPS OF TREATING THE HAIR WITH A THERMOSETTING ORGANO-SILICON POLYMER REACTED TO AN INTERMEDIATE STAGE OF POLYMERIC GROWTH AND AN ORGANO-SILICON FLUID, AND THEN HEATING THE TREATED HAIR TO ADVANCE THE POLYMER WHILE THE HAIR IS BEING POSITIONED IN THE ARRANGEMENT IN WHICH IT IS TO BE SET.
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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |