Coating processes – Coating by vapor – gas – or smoke – Carbon or carbide coating
Reexamination Certificate
2007-11-27
2007-11-27
McDonald, Rodney G. (Department: 1753)
Coating processes
Coating by vapor, gas, or smoke
Carbon or carbide coating
C427S249100, C427S523000, C427S524000, C427S530000, C427S528000, C427S534000, C427S569000, C204S192300, C204S192320, C118S7230AN, C118S7230ER, C118S708000, C118S663000
Reexamination Certificate
active
10891983
ABSTRACT:
The coating of internal surfaces of a workpiece is achieved by connecting a bias voltage such that the workpiece functions as a cathode and by connecting an anode at each opening of the workpiece. A source gas is introduced at an entrance opening, while a vacuum source is connected at an exit opening. Pressure within the workpiece is monitored and the resulting pressure information is used for maintaining a condition that exhibits the hollow cathode effect. Optionally, a pre-cleaning may be provided by introducing a hydrocarbon mixture and applying a negative bias to the workpiece, so as to sputter contaminants from the workpiece using argon gas. Argon gas may also be introduced during the coating processing to re-sputter the coating, thereby improving uniformity along the length of the workpiece. The coating may be a diamond-like carbon material having properties which are determined by controlling ion bombardment energy.
REFERENCES:
patent: 4407712 (1983-10-01), Henshaw et al.
patent: 4714589 (1987-12-01), Auwerda et al.
patent: 5026466 (1991-06-01), Wesemeyer et al.
patent: 5368937 (1994-11-01), Itoh
patent: 5712000 (1998-01-01), Wei et al.
patent: 5879763 (1999-03-01), Sugiyama et al.
patent: 6129856 (2000-10-01), Jung et al.
patent: 6488825 (2002-12-01), Hilliard
patent: 6663755 (2003-12-01), Gorokhovsky
patent: 2002/0039626 (2002-04-01), Nakahigashi et al.
patent: 2004/0112536 (2004-06-01), Quon
patent: 63-026373 (1988-02-01), None
patent: 09-195036 (1997-07-01), None
patent: 2001200369 (2001-07-01), None
Machine Translation of 09-195036 dated Jul. 1997.
Boardman William John
Mercado Raul Donate
Tudhope Andrew William
Law Offices of Terry McHugh
McDonald Rodney G.
Sub-One Technology, Inc.
LandOfFree
Method and system for coating internal surfaces of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and system for coating internal surfaces of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for coating internal surfaces of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3876203