Patent US3475114A successfully refreshed from Google Patents.
US3475114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modification of keratin fibers with ethylenically unsaturated compounds in the presence of aqueous solutions of fiber swelling agents
Assignee: Deering Milliken Research Corp
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Filing: 1962-12-06
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Granted: 1969-10-28
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Expires: 1982-12-06
Abstract
No abstract record available.
Inventors
- 👤 Edgar Dare Bolinger
- 👤 Willard L Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:53
CPC Classifications
D; D06; D06M; D06M14/00; D06M14/02; D06M14/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN THE PROCESS FOR MODIFYING THE CHARACTERISTICS OF KERATIN FIBERS BY REACTION THEREWITH OF ETHYLENICALLY UNSATURATED COMPOUNDS, THE IMPROVEMENT WHICH COMPRISES TREATING THE FIBERS WITH AN AQUEOUS SYSTEM CONTAINING A SWELLING AGENT FOR SAID FIBERS SELECTED FROM THE CLASS CONSISTING OF UREA, GUANADINE COMPOUNS, AMIDES, THIOUREA, PHENOL, AND INORGANIC LITHIUM SALTS AND MAINTAINING THE SAID FIBERS IN A SWOLLEN STATE WHILE CONDUCTING THE REACTION.
Claim 2
Dependent Claim
64 words
IN THE PROCESS FOR MODIFYING THE CHARACTERISTICS OF KERATIN FIBERS BY REACTION THEREWITH OF ETHYLENICALLY UNSATURATED COMPOUNDS, THE IMPROVEMENT WHICH COMPRISES TREATING THE FIBERS WITH AN AQUEOUS SYSTEM CONTAINING A SWELLING AGENT FOR SAID FIBERS SELECTED FROM THE CLASS CONSISTING OF UREA, GUANADINE COMPOUNS, AMIDES, THIOUREA, PHENOL, AND INORGANIC LITHIUM SALTS AND MAINTAINING THE SAID FIBERS IN A SWOLLEN STATE WHILE CONDUCTING THE REACTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |