US4092280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for a typewriter ribbon having delayed alteration resistance
Assignee: Individual
•
Filing: 1976-03-26
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Granted: 1978-05-30
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Expires: 1996-03-26
Abstract
Abstract A composition for a correctable typewriter ribbon adapted to be adhesively lifted off from the typing bond to which it is transferred for a short period of time, after which the alteration resistance of a typed indicia changes so that an adhesive lift off operation fails to remove the visible image from the typing bond.
Inventors
- 👤 Victor Barouh
- 👤 George Rottmann
- 👤 Sylvester Giaccone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:40
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; B; B41; B41M; B41M5/00; B41M5/10; C09D11/10; Y; Y10; Y10S; Y10S428/00; Y10S428/914
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
A delayed alteration resistance ink composition consisting substantially of approximately 8.75 parts polyamide resin, 12.00 parts dioctyl phthalate, 30.25 parts isopropanol, 15.00 parts toluol, 3.00 parts toner, 4.00 parts pigment, 2.25 parts non-ferrous tannic acid, 6 parts hydrogenated terphenyl, and 1.5 parts peltrolatum, and 1 part water-soluble hiphenylmethane dye which is capable of migrating gradually into typing bond after the delayed alteration resistance ink composition has been placed in contact therewith, and which triphenylmethane dye has no solubility in any of the liquid components of said delayed alteration resistance ink composition.
Claim 2
Dependent Claim
91 words
A delayed alteration resistance ink composition consisting substantially of approximately 8.75 parts polyamide resin, 12.00 parts dioctyl phthalate, 30.25 parts isopropanol, 15.00 parts toluol, 3.00 parts toner, 4.00 parts pigment, 2.25 parts non-ferrous tannic acid, 6 parts hydrogenated terphenyl, and 1.5 parts peltrolatum, and 1 part water-soluble hiphenylmethane dye which is capable of migrating gradually into typing bond after the delayed alteration resistance ink composition has been placed in contact therewith, and which triphenylmethane dye has no solubility in any of the liquid components of said delayed alteration resistance ink composition.
Claim 3
Dependent Claim
75 words
A delayed alteration resistance ink composition consisting substantially of approximately 8 parts polyamide resin, 17 parts hydrogenated terphenyl, 22 parts toluol, 22 parts isopropanol, 9 parts pigment, and 1 part watersoluble hyphenylmethane dye which is capable of migrating gradually into typing bond after the delayed alteration resistance ink composition has been placed in contact therewith, and which triphenylmethane dye has no solubility in any of the liquid components of said delayed alteration resistance ink composition.
Claim 4
Dependent Claim
75 words
A delayed alteration resistance ink composition consisting substantially of approximately 8 parts polyamide resin, 17 parts hydrogenated terphenyl, 22 parts toluol, 22 parts isopropanol, 9 parts pigment, and 1 part watersoluble hyphenylmethane dye which is capable of migrating gradually into typing bond after the delayed alteration resistance ink composition has been placed in contact therewith, and which triphenylmethane dye has no solubility in any of the liquid components of said delayed alteration resistance ink composition.
Claim 5
Dependent Claim
81 words
A delayed alteration resistance ink composition consisting substantially of approximately 52 parts methyl ethyl ketone, 6 parts tricresyl phosphate, 6 parts vinyl acetate-vinyl chloride copolymer resin, 13 parts oleic acid, 15 parts pigment, and 1 part water-soluble triphenylmethane dye which is capable of migrating gradually into typing bond after the delayed alteration resistance ink composition has been placed in contact therewith, and which triphenylmethane dye has no solubility in any of the liquid components of said delayed alteration resistance ink composition.
Claim 6
Dependent Claim
81 words
A delayed alteration resistance ink composition consisting substantially of approximately 52 parts methyl ethyl ketone, 6 parts tricresyl phosphate, 6 parts vinyl acetate-vinyl chloride copolymer resin, 13 parts oleic acid, 15 parts pigment, and 1 part water-soluble triphenylmethane dye which is capable of migrating gradually into typing bond after the delayed alteration resistance ink composition has been placed in contact therewith, and which triphenylmethane dye has no solubility in any of the liquid components of said delayed alteration resistance ink composition.
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) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |