US3140957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treatment of fibers
Assignee: Kurashiki Rayon Co Ltd
•
Filing: 1961-02-23
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Granted: 1964-07-14
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Expires: 1981-02-23
Abstract
No abstract record available.
Inventors
- 👤 Tanabe Kenichi
- 👤 Saito Hideo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:59
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/229; D02J1/221; D06; D06M; D06M13/00; D06M13/10; D06M13/184; D06M13/188; D06M13/322; D06M13/325; D06M13/52; D06M13/53; D06M15/00; D06M15/19; D06M15/37; D06M15/53; D06M15/643; Y; Y10; Y10S; Y10S8/00; Y10S8/09; Y10S8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS FOR THE HEAT TREATMENT OF ORGANIC FIBERS BENEFITED BY HEAT TREATMENT WHICH COMPRISES THE STEPS OF COATING THE FIBERS WITH A LIQUID SUBSTANCE RESISTANT TO TEMPERATURES UP TO ABOUT 250*C., SAID LIQUID SUBSTANCE BEING SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS, POLYHYDRIC ALCOHOLS, AMINES, POLYETHERS, LONG-CHAIN ALIPHATIC ACIDS, AND SILICONE OILS AND THEN EXPOSING SAID FIBERS TO A MEMBER OF THE GROUP CONSISTING OF AIR AND AN INERT GAS HEATED TO A TEMPERATURE OF AT LEAST ABOUT 140*C.
Claim 2
Dependent Claim
80 words
A PROCESS FOR THE HEAT TREATMENT OF ORGANIC FIBERS BENEFITED BY HEAT TREATMENT WHICH COMPRISES THE STEPS OF COATING THE FIBERS WITH A LIQUID SUBSTANCE RESISTANT TO TEMPERATURES UP TO ABOUT 250*C., SAID LIQUID SUBSTANCE BEING SELECTED FROM THE GROUP CONSISTING OF HYDROCARBONS, POLYHYDRIC ALCOHOLS, AMINES, POLYETHERS, LONG-CHAIN ALIPHATIC ACIDS, AND SILICONE OILS AND THEN EXPOSING SAID FIBERS TO A MEMBER OF THE GROUP CONSISTING OF AIR AND AN INERT GAS HEATED TO A TEMPERATURE OF AT LEAST ABOUT 140*C.
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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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |