US4343653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Completely oxidized Sulfur Black 1 for ink
Assignee: IBM Information Products Corp
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Filing: 1981-04-17
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Granted: 1982-08-10
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Expires: 2001-04-17
Abstract
Abstract Particle occurrence in an aqueous jet ink from Sulfur Black 1 is greatly reduced by employing a Sulfur Black 1 completely oxidized at the solubilizing groups.
Inventors
- 👤 Bradley L. Beach
- 👤 Paul D. Gates
- 👤 Vaughn J. Schum, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:17
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/32; C09D11/328; C09B; C09B49/00; C09D11/02; C09D11/03; C09D11/037
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
38 words
Water soluble Sulfur Black 1 substantially completely oxidized at the solubilizing groups, substantially free of other Sulfur Black 1, and suitable for incorporation in an aqueous printing ink to provide an imaging capability to said aqueous printing ink.
Claim 2
Dependent Claim
38 words
Water soluble Sulfur Black 1 substantially completely oxidized at the solubilizing groups, substantially free of other Sulfur Black 1, and suitable for incorporation in an aqueous printing ink to provide an imaging capability to said aqueous printing ink.
Claim 3
Dependent Claim
25 words
An aqueous jet ink having dye consisting essentially of at least one dye of said completely oxidized Sulfur Black 1 as described in claim 1.
Claim 4
Dependent Claim
27 words
An aqueous jet ink as in claim 2 in which said Sulfur Black 1 is in the order of magnitude of 1% by weight of said ink.
Claim 5
Dependent Claim
28 words
The process of modifying Sulfur Black 1 for use as a water soluble dye in aqueous inks comprising completely oxidizing said Sulfur Black 1 at the solubilizing groups.
Claim 6
Dependent Claim
28 words
The process of modifying Sulfur Black 1 for use as a water soluble dye in aqueous inks comprising completely oxidizing said Sulfur Black 1 at the solubilizing groups.
Claim 7
Dependent Claim
43 words
The process as in claim 4 in which said Sulfur Black 1 is oxidized in an aqueous solution containing hydrogen peroxide in an amount at least about three-fifths by weight the weight of said Sulfur Black 1 and said solution is predominately acidic.
Claim 8
Dependent Claim
24 words
The process as in claim 4 in which said solution comprises about equal amounts by weight of said Sulfur Black and said hydrogen peroxide.
Claim 9
Dependent Claim
35 words
The process of modifying an aqueous ink containing Sulfur Black 1 to reduce particle formation comprising treating said ink with an oxidizing agent until said Sulfur Black is substantially completely oxidized at the solubilizing groups.
Claim 10
Dependent Claim
35 words
The process of modifying an aqueous ink containing Sulfur Black 1 to reduce particle formation comprising treating said ink with an oxidizing agent until said Sulfur Black is substantially completely oxidized at the solubilizing groups.
Claim 11
Dependent Claim
14 words
The process as in claim 7 in which said oxidizing agent is hydrogen peroxide.
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) | 1985-08-09 | 1986-02-08 | 1986-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-09 | 1990-02-08 | 1990-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-09 | 1994-02-08 | 1994-08-10 | $7700.00 | Window Closed / Lapsed |