Patent US3860012A successfully refreshed from Google Patents.
US3860012A
Expired / Lapsed
US
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Method of producing a reconstituted tobacco product
Assignee: Kimberly Clark Corp
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Filing: 1973-05-21
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Granted: 1975-01-14
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Expires: 1993-05-21
Abstract
Abstract Modified tobacco fibers, having reduced bonding ability, are produced by cooking tobacco stalk material and then soaking the resulting fibers in a caustic solution. A combination of tobacco lamina and mid-rib is extracted; the fibers remaining after extraction are mixed with the modified fibers and the mixture formed into a sheet which is impregnated with the extract material.
Inventors
- 👤 William A Selke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:02
CPC Classifications
A; A24; A24B; A24B15/00; A24B15/10; A24B15/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
110 words
A METHOD OF MAKING A RECONSTITUTED TOBACCO PRODUCT FOR USE IN A SMOKABLE ARTICLE, COMPRISING THE STEPS OF: A. COOKING NATURAL TOBACCO STALK MATERIAL AT AN ELEVATED TEMPERATURE TO INDIVIDUALIZE THE STALK FIBERS, B. THEREAFTER SOAKING THE COOKED STALK FIBERS IN A CONCENTRATED CAUSTIC SOLUTION TO PRODUCE MODIFIED FIBERS WHICH DO NOT BOND TO EACH OTHER OR TO OTHER FIBROUS MATERIAL AS READILY AS DO FIBERS NOT SO MODIFIED. C. SEPARATING OTHER NATURAL TOBACCO MATERIAL INTO FIBROUS MATERIAL AND EXTRACT MATERIAL, D. MIXING THE MODIFIED FIBERS WITH THE FIBROUS MATERIAL AND FORMING THE MIXTURE BY PAPERMAKING TECHNIQUES INTO A PAPER-LIKE WEB, AND E. IMPREGNATING THE WEB WITH THE EXTRACT MATERIAL.
Claim 2
Independent Claim
110 words
A METHOD OF MAKING A RECONSTITUTED TOBACCO PRODUCT FOR USE IN A SMOKABLE ARTICLE, COMPRISING THE STEPS OF: A. COOKING NATURAL TOBACCO STALK MATERIAL AT AN ELEVATED TEMPERATURE TO INDIVIDUALIZE THE STALK FIBERS, B. THEREAFTER SOAKING THE COOKED STALK FIBERS IN A CONCENTRATED CAUSTIC SOLUTION TO PRODUCE MODIFIED FIBERS WHICH DO NOT BOND TO EACH OTHER OR TO OTHER FIBROUS MATERIAL AS READILY AS DO FIBERS NOT SO MODIFIED. C. SEPARATING OTHER NATURAL TOBACCO MATERIAL INTO FIBROUS MATERIAL AND EXTRACT MATERIAL, D. MIXING THE MODIFIED FIBERS WITH THE FIBROUS MATERIAL AND FORMING THE MIXTURE BY PAPERMAKING TECHNIQUES INTO A PAPER-LIKE WEB, AND E. IMPREGNATING THE WEB WITH THE EXTRACT MATERIAL.
Claim 3
Dependent Claim
15 words
A method as defined in claim 1 wherein the caustic solution is at room temperature.
Claim 4
Dependent Claim
17 words
A method as defined in claim 1 wherein the caustic solution is sodium hydroxide or potassium hydroxide.
Claim 5
Dependent Claim
18 words
A method as defined in claim 1 wherein the caustic solution is 10 percent to 25 percent caustic.
Claim 6
Dependent Claim
17 words
A method as defined in claim 1 wherein the caustic solution is 15 to 20 percent caustic.
Claim 7
Dependent Claim
20 words
A method as defined in claim 1 wherein the tobacco stalk material is cooked in a solution containing sodium hydroxide.
Claim 8
Dependent Claim
20 words
A method as defined in claim 1 wherein the tobacco stalk material is cooked in a solution containing sodium sulfite.
Claim 9
Dependent Claim
33 words
A method as defined in claim 1 wherein the amount of modified fibers in the mixture was between 10 and 40 percent of the amount of combined modified fibers and other fibrous material.
Claim 10
Dependent Claim
33 words
A method as defined in claim 1 wherein the amount of modified fibers in the mixture was between 10 and 20 percent of the amount of combined modified fibers and other fibrous material.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |