US5500201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating carbon black and carbon black so treated
Assignee: United States Department of the Army
•
Filing: 1994-11-22
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Granted: 1996-03-19
•
Expires: 2014-11-22
Abstract
Abstract The physical and chemical properties of carbon blacks are modified by exposing them to a room temperature gas plasma.
Inventors
- 👤 Michael Binder
- 👤 Robert J. Mammone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:13
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C07; C07C; C07C25/00; C09C3/00; C09C3/04; C09C3/048; C01; C01P; C01P2006/00; C01P2006/90
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
29 words
Method of treating carbon black so as to modify its surface properties comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is He.
Claim 2
Dependent Claim
29 words
Method of treating carbon black so as to modify its surface properties comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is He.
Claim 3
Dependent Claim
31 words
Method of treating carbon black so as to modify its surface properties comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is Cl 2 .
Claim 4
Dependent Claim
31 words
Method of treating carbon black so as to modify its surface properties comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is Cl 2 .
Claim 5
Dependent Claim
31 words
Method of treating carbon black so as to modify its surface properties comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is F 2 .
Claim 6
Dependent Claim
31 words
Method of treating carbon black so as to modify its surface properties comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is F 2 .
Claim 7
Dependent Claim
29 words
Method of treating carbon black so as to modify its surface properties comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is NO.
Claim 8
Dependent Claim
29 words
Method of treating carbon black so as to modify its surface properties comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is NO.
Claim 9
Dependent Claim
31 words
Method of treating carbon black so as to modify its surface properties, comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is CF 4 .
Claim 10
Dependent Claim
31 words
Method of treating carbon black so as to modify its surface properties, comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is CF 4 .
Claim 11
Dependent Claim
31 words
Method of treating carbon black so as to modify its surface properties, comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is NO 2 .
Claim 12
Dependent Claim
31 words
Method of treating carbon black so as to modify its surface properties, comprising exposing the carbon black to a room temperature gas plasma wherein the gas plasma is NO 2 .
References Cited (Backward Citations)
JPS60252663A
Cited
US5328782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-03-19 | 1999-09-18 | 2000-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-19 | 2003-09-18 | 2004-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-19 | 2007-09-18 | 2008-03-19 | $7700.00 | Window Closed / Lapsed |