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Ameen
Joseph G. Ameen, Newark, DE US
| Patent application number | Description | Published |
|---|---|---|
| 20100000877 | Method for electrochemical mechanical polishing - The present invention provides a method of electrochemical polishing of a workpiece using a polishing pad having a cellular polymeric layer overlying a conductive substrate, the cellular polymeric layer having a thickness less than 1.5 mm; wherein the cellular polymeric layer comprises a plurality of pores that extend through the thickness of the cellular polymeric layer from a polishing surface of the cellular polymeric layer to the conductive substrate; and wherein the plurality of pores exhibit a diameter that is smaller at the polishing surface than at the conductive substrate. | 01-07-2010 |
Mohammad M. Ameen, Cupertino, CA US
| Patent application number | Description | Published |
|---|---|---|
| 20080261708 | FDB MOTOR WITH TAPERED SHAFT FOR IMPROVED PUMPING EFFICIENCY - For motors having a journal with one or more groove regions and a shaft for relative rotation in the journal, aspects include providing a dual tapered shaft. The shaft may be tapered by the application of a wear resistant coating at least opposite the groove regions. The coating introduces a shaft taper from near a top end and from near a bottom end towards the shaft middle. The shaft taper may provide for improved pumping efficiency. The coating may be applied in various processes such as chemical vapor deposition or physical vapor deposition to establish a thickness gradient of coating material from near the top end and near the bottom end towards the shaft middle. In one example, the coating includes a DLC coating. Additionally, shaft portions may be shielded to prevent coatings thereon. | 10-23-2008 |
| 20100184521 | METHOD FOR CONTROLLING SHAFT COATING TAPER - A component of a disc drive has a coating of a predetermined length on its surface, the coating having at least two separate tapered regions applied in independent steps, the at least two separate tapered regions each having a length that is less than the predetermined length of the component surface. When the component is a shaft of a spindle motor, the ends of the shaft are masked before the tapered regions of coating are applied, and the thickness of the masks covering the shaft ends is varied to control a taper of tapered regions. | 07-22-2010 |
Mohammed S. Ameen, Dhahran SA
| Patent application number | Description | Published |
|---|---|---|
| 20080290876 | Method of characterizing hydrocarbon reservoir fractures in situ with artificially enhanced magnetic anisotropy - Reservoir fractures are characterized directly in situ without need to acquire and analyze formation sample cores. A magnetic fluid is injected into an isolated section of the reservoir. The magnitude and directional properties of the enhanced magnetic susceptibility in the section where magnetic fluid injection occurs is measured with a down hole magnetometer. Logs obtained of the enhanced magnetic susceptibility are analyzed to characterize fractures, and petrophysical properties of interest, such as porosity, permeability, and permeability anisotropy of the formation in the vicinity of the fluid injection. | 11-27-2008 |