Patent US5378272A successfully refreshed from Google Patents.
US5378272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uintaite-derived toners and printing inks
Assignee: American Gilsonite Co
•
Filing: 1993-08-26
•
Granted: 1995-01-03
•
Expires: 2013-08-26
Abstract
Abstract A composition useful in copying and printing is described. In one embodiment, the composition comprises a purified fraction of uintaite and a thermoplastic polymer. Preferably, the composition comprises a maltene-enriched fraction of uintaite derived by solvent extraction, a thermoplastic polymer and a colorant. In another embodiment, the present invention is an electrophotographic method comprising the steps of generating a latent electrostatic image; developing said latent image with a toner comprising a purified fraction of uintaite; and fixing said toner. The present invention is also a printing ink emulsion comprising a maltene-enriched fraction of uintaite.
Inventors
- 👤 Enrique E. Romagosa
- 👤 John F. Cooper
- 👤 Michael Nuzzolo
- 👤 Michael Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:04
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; G; G03; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08775; G03G9/08777; G03G9/097; G03G9/09733
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
48 words
A composition useful in imaging processes, comprising: a. 0.5 to about 75 weight percent of purified fraction of uintaite enriched in maltenes relative to natural uintaite; and b. a colorant; wherein said fraction of uintaite has a weight ratio of maltenes to asphaltenes of greater than about 6.
Claim 2
Dependent Claim
48 words
A composition useful in imaging processes, comprising: a. 0.5 to about 75 weight percent of purified fraction of uintaite enriched in maltenes relative to natural uintaite; and b. a colorant; wherein said fraction of uintaite has a weight ratio of maltenes to asphaltenes of greater than about 6.
Claim 3
Dependent Claim
16 words
A composition as described in claim 1, wherein said maltene-enriched fraction is derived by solvent extraction.
Claim 4
Dependent Claim
12 words
A composition as described in claim 1, further comprising a hydrocarbon oil.
Claim 5
Dependent Claim
14 words
A composition as described in claim 3, wherein the composition is emulsified with water.
Claim 6
Dependent Claim
26 words
An emulsion composition comprising: a. a maltene-enriched fraction of uintaite having a weight ratio of maltenes to asphaltenes of greater than about 6; and b. water.
Claim 7
Dependent Claim
26 words
An emulsion composition comprising: a. a maltene-enriched fraction of uintaite having a weight ratio of maltenes to asphaltenes of greater than about 6; and b. water.
Claim 8
Dependent Claim
13 words
An emulsion composition as described in claim 5, further comprising a hydrocarbon oil.
Claim 9
Dependent Claim
12 words
An emulsion composition as described in claim 5, further comprising a surfactant.
Claim 10
Dependent Claim
11 words
An emulsion composition as described in claim 5, further comprising rosin.
Claim 11
Dependent Claim
15 words
An emulsion composition as described in claim 8, wherein said rosin comprises an acid rosin.
Claim 12
Dependent Claim
33 words
An emulsion composition as described in claim 5, wherein said water comprises a base selected from the group consisting of potassium oxide or hydroxide, calcium oxide or hydroxide and zinc oxide or hydroxide.
Claim 13
Dependent Claim
16 words
An emulsion composition as described in claim 10, wherein said water comprises potassium oxide or hydroxide.
Claim 14
Dependent Claim
20 words
An emulsion composition as described in claim 9, wherein said water comprising sufficient potassium hydroxide to neutralize said acid rosin.
Claim 15
Dependent Claim
12 words
An emulsion composition as described in claim 12, further comprising a colorant.
References Cited (Backward Citations)
GB944401A
Cited
US3427967A
Cited
US3652315A
Cited
US3671646A
Cited
US4018601A
Cited
US4254201A
Cited
US4282037A
Cited
US4554019A
Cited
US4519841A
Cited
US4437896A
Cited
JPS6071675A
Cited
US4722953A
Cited
US4592988A
Cited
US4591611A
Cited
JPS63374A
Cited
US4859245A
Cited
US5047143A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-01-02 | 1998-07-04 | 1999-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-02 | 2002-07-04 | 2003-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-02 | 2006-07-04 | 2007-01-03 | $7700.00 | Window Closed / Lapsed |