Hua Han resumes & CV records
Resumes
Hua Helen Han
Hua Han
Location:
United States
Hua M Han, 47Irvine, CA
Hua Han Phones & Addresses
Irvine, CA
Oceanside, CA
Foster City, CA
Fremont, CA
Gaithersburg, MD
Boston, MA
San Francisco, CA
Germantown, MD
Beltsville, MD
Alexandria, VA
Mentions for Hua M Han
Publications & IP owners
Us Patents
Silicon Carbide Overcoats For Information Storage Systems And Method Of Making
US Patent:
6583953, Jun 24, 2003
Filed:
Jul 12, 1999
Appl. No.:
09/352544
Inventors:
Hua Han - Fremont CA
Francis W. Ryan - Martinez CA
Carolyn S. Robinson - San Jose CA
Thomas P. Ultican - San Jose CA
Francis W. Ryan - Martinez CA
Carolyn S. Robinson - San Jose CA
Thomas P. Ultican - San Jose CA
Assignee:
Mark Lauer - Pleasanton CA
International Classification:
G11B 5187
US Classification:
360122, 2960307
Abstract:
An overcoat overcoat for a head and/or media surface is made of a hard, dense and durable silicon-carbide (SiC) layer. The SiC layer does not require an interlayer to promote adhesion to underlying magnetic or ceramic layers, thus reducing head-media spacing and increasing areal storage density and resolution. The SiC is formed in a manner that creates an overcoat with density, hardness, durability and corrosion resistance similar to DLC. The SiC overcoat formation process also penetrates less into underlying magnetic layers than is conventional, reducing further the spacing of active elements by inactive coatings. In an alternative embodiment, SiC may be formed by this process as an interlayer for a carbon overcoat such as DLC or ta-C. This allows the overcoat to be made thinner, since the interlayer is hard and dense, while retaining the chemical and other surface properties of the carbon overcoat.
Durable Landing Pads For An Air-Bearing Slider
US Patent:
6236543, May 22, 2001
Filed:
Jan 29, 1999
Appl. No.:
9/239594
Inventors:
Hua Han - Fremont CA
Kelly D. Linden - Los Gatos CA
Francis W. Ryan - Martinez CA
Lee C. Boman - Belmont CA
Kelly D. Linden - Los Gatos CA
Francis W. Ryan - Martinez CA
Lee C. Boman - Belmont CA
Assignee:
Read-Rite Corporation - Fremont CA
International Classification:
G11B 560
US Classification:
3602366
Abstract:
Durable landing pads for a slider air-bearing surface (ABS) are formed of tetrahedral amorphous carbon (t-aC) by filtered cathodic arc deposition. A hard carbon overcoat of the ABS is pierced to anchor the pads. The t-aC is extremely hard and highly stressed, and the pads may be laminated with a stress-relieving material. A rotating angled etching such as ion milling may be performed to undercut the hard carbon overcoat and further anchor the pads. A rotating angled deposition of t-aC may also be performed to round the pad tops, which may be trimmed to smooth corners.
Possible Relatives
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