Patent US5066332A successfully refreshed from Google Patents.
US5066332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low corrosion hot melt ink
Assignee: COATES ELECTROGRAPHICS Ltd A CORP OF GREAT BRITAIN
•
Filing: 1990-05-23
•
Granted: 1991-11-19
•
Expires: 2010-05-23
Abstract
Abstract In the particular embodiments described in the specification, low-corrosion hot melt ink contains 0.5% to 10% by weight of a metallo-organic compound such as overbased calcium sulphonate, basic barium sulphonate and overbased sulphurized calcium alkyl phenate as a corrosion inhibitor. Such inks produce no significant corrosion of printing system components after extended exposure at elevated temperatures.
Inventors
- 👤 Edward A. Brown
- 👤 John P. N. Haxell
- 👤 Derek E. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:19
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/30; C09D11/34
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
41 words
A hot melt ink comprising a coloring agent, a thermoplastic vehicle containing the coloring agent, and 0.5 to 10 weight percent of a corrosion inhibitor selected from the group consisting of a basic heat stable metallo-organic sulphonate and overbased sulphurized metallo-phenate.
Claim 2
Dependent Claim
41 words
A hot melt ink comprising a coloring agent, a thermoplastic vehicle containing the coloring agent, and 0.5 to 10 weight percent of a corrosion inhibitor selected from the group consisting of a basic heat stable metallo-organic sulphonate and overbased sulphurized metallo-phenate.
Claim 3
Dependent Claim
25 words
A hot melt ink according to claim 1 wherein the corrosion inhibitor is present in an amount of about 1 to about 5 weight percent.
Claim 4
Dependent Claim
27 words
A hot melt ink according to claim 1 wherein the basic metallo-organic compound has a calcium content in the range from about 10 to about 20 percent.
Claim 5
Dependent Claim
26 words
A hot melt ink according to claim 1 wherein the basic metallo-organic compound has a total base number in the range from about 200 to 600.
Claim 6
Dependent Claim
16 words
A hot melt ink according to claim 1 wherein the thermoplastic vehicle comprises a hydrocarbon polymer.
Claim 7
Dependent Claim
15 words
A hot melt ink according to claim 1 wherein the thermoplastic vehicle comprises a wax.
Claim 8
Dependent Claim
24 words
A hot melt ink according to claim 1 wherein the thermoplastic vehicle comprises a blend of blends of waxes, waxlike materials and organic polymers.
Claim 9
Dependent Claim
18 words
A hot melt ink according to claim 1 wherein the basic metallo-organic compound comprises an overbased calcium sulphonate.
Claim 10
Dependent Claim
18 words
A hot melt ink according to claim 1 wherein the basic metallo-organic compound comprises a basic barium sulphonate.
Claim 11
Dependent Claim
20 words
A hot melt ink according to claim 1 wherein the basic metallo-organic compound comprises an overbased sulphurized calcium alkyl phenate.
References Cited (Backward Citations)
US4280939A
Cited
US4390369A
Cited
US4484948A
Cited
US4479981A
Cited
US4738889A
Cited
US4851045A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-11-18 | 1995-05-20 | 1995-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-18 | 1999-05-20 | 1999-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-18 | 2003-05-20 | 2003-11-19 | $7700.00 | Window Closed / Lapsed |