Patent US3305315A successfully refreshed from Google Patents.
US3305315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacturing flexible carbonaceous textile material
Assignee: Union Carbide Corp
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Filing: 1962-09-20
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Granted: 1967-02-21
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Expires: 1982-09-20
Abstract
No abstract record available.
Inventors
- 👤 Bacon Roger
- 👤 George E Cranch
- 👤 Jr Ralph O Moyer
- 👤 Willie H Watts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:57
CPC Classifications
D; D01; D01F; D01F9/00; D01F9/08; D01F9/12; D01F9/14; D01F9/16; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
A PROCESS FOR THE PRODUCTION OF A PERMANENTLY DEHYDRATED HEAT TREATED MATERIAL FROM A CELLULOSIC TEXTILE MATERIAL WHEREIN THE HEAT TREATED MATERIAL SUBSTANTIALLY RETAINS THE CHARACTERISTIC PHYSICAL TEXTILE ATTRIBUTES OF THE UNHEAT TREATED CELLULOSIC STARTING MATERIAL, SAID PROCESS COMPRISING SUBJECTING SAID CELLULOSIC MATERIAL TO A CONTROLLED PARTIAL AND SELECTIVVE DECOMPOSITION OF THE CELLULOSIC MOLECULE BY IMMERSING SAID CELLULOSIC MATERIAL IN AN ACID SOLUTION TO WET SAID MATERIAL THEREWITH, REMOVING SAID WET MATERIAL FROM SAID SOLUTION, DRYING SAID MATERIAL TO REMOVE THE SOLVENT THEREFROM, AND HEAT TREATING SAID DRIED MATERIAL IN AN OXIDIZING ATMOSPHERE, WHEREBY SAID DECOMPOSITION INVOLVES A RUPTURE OF CARBON-OXYGEN AND CARBONHYDROGEN BONDS AND THE EVOLUTION OF WATER, BUT FALLING JUST SHORT OF THE SCISSION OF THE MAIN CELLULOSE MOLECULE, THE RUPTURE OF THE CARBON-CARBON BONDS AND THE EVOLUTION OF HYDROGEN.
Claim 2
Dependent Claim
132 words
A PROCESS FOR THE PRODUCTION OF A PERMANENTLY DEHYDRATED HEAT TREATED MATERIAL FROM A CELLULOSIC TEXTILE MATERIAL WHEREIN THE HEAT TREATED MATERIAL SUBSTANTIALLY RETAINS THE CHARACTERISTIC PHYSICAL TEXTILE ATTRIBUTES OF THE UNHEAT TREATED CELLULOSIC STARTING MATERIAL, SAID PROCESS COMPRISING SUBJECTING SAID CELLULOSIC MATERIAL TO A CONTROLLED PARTIAL AND SELECTIVVE DECOMPOSITION OF THE CELLULOSIC MOLECULE BY IMMERSING SAID CELLULOSIC MATERIAL IN AN ACID SOLUTION TO WET SAID MATERIAL THEREWITH, REMOVING SAID WET MATERIAL FROM SAID SOLUTION, DRYING SAID MATERIAL TO REMOVE THE SOLVENT THEREFROM, AND HEAT TREATING SAID DRIED MATERIAL IN AN OXIDIZING ATMOSPHERE, WHEREBY SAID DECOMPOSITION INVOLVES A RUPTURE OF CARBON-OXYGEN AND CARBONHYDROGEN BONDS AND THE EVOLUTION OF WATER, BUT FALLING JUST SHORT OF THE SCISSION OF THE MAIN CELLULOSE MOLECULE, THE RUPTURE OF THE CARBON-CARBON BONDS AND THE EVOLUTION OF HYDROGEN.
Claim 3
Dependent Claim
84 words
A PROCESS FOR THE CARBONIZATION OF CELLULOSIC MATERIAL WHICH COMPRISES IMMERSING SAID CELLULOSIC MATERIAL IN AN ACID SOLUTION TO WET SAID MATERIAL THEREWITH; REMOVING SAID WET MATERIAL FROM SAID SOLUTION; DRYING SAID MATERIAL TO REMOVE THE SOLVENT THEREFROM; HEAT TREATING SAID DRIED MATERIAL IN AN OXIDIZING ATMOSPHERE AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 100*C. TO 350*C. TO IMPART A PERMANENT DEHYDRATION THERETO, AND SUBSEQUENTLY CARBONIZING SAID MATERIAL BY HEATING SAID MATERIAL TO A CARBONIZING TEMPERATURE WHILE PROTECTING SAID MATERIAL FROM OXIDATION.
Claim 4
Dependent Claim
84 words
A PROCESS FOR THE CARBONIZATION OF CELLULOSIC MATERIAL WHICH COMPRISES IMMERSING SAID CELLULOSIC MATERIAL IN AN ACID SOLUTION TO WET SAID MATERIAL THEREWITH; REMOVING SAID WET MATERIAL FROM SAID SOLUTION; DRYING SAID MATERIAL TO REMOVE THE SOLVENT THEREFROM; HEAT TREATING SAID DRIED MATERIAL IN AN OXIDIZING ATMOSPHERE AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 100*C. TO 350*C. TO IMPART A PERMANENT DEHYDRATION THERETO, AND SUBSEQUENTLY CARBONIZING SAID MATERIAL BY HEATING SAID MATERIAL TO A CARBONIZING TEMPERATURE WHILE PROTECTING SAID MATERIAL FROM OXIDATION.
References Cited (Backward Citations)
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US2739096A
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US3011981A
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US3053775A
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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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |