Moinuddin Ahmed Ahmed

US Patent:

7337271, Feb 26, 2008

Filed:

Dec 1, 2003

Appl. No.:

10/724815

Inventors:

Philip George Emma - Danbury CT, US
Allan Mark Hartstein - Chappaqua NY, US
Brian R. Prasky - Wappingers Falls NY, US
Thomas Roberts Puzak - Ridgefield CT, US
Moinuddin Khalil Ahmed Qureshi - Austin TX, US
Vijayalakshmi Srinivasan - New York NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 12/00
G06F 9/00

US Classification:

711117, 711118, 711119, 711122, 712240, 712239, 712238

Abstract:

A memory storage structure includes a memory storage device, and a first meta-structure having a first size and operating at a first speed. The first speed is faster than a second speed for storing meta-information based on information stored in a memory. A second meta-structure is hierarchically associated with the first meta-structure. The second meta-structure has a second size larger than the first size and operates at the second speed such that faster and more accurate prefetching is provided by coaction of the first and second meta-structures. A method is provided to assemble the meta-information in the first meta-structure and copy this information to the second meta-structure, and prefetching the stored information from the second meta-structure to the first meta-structure ahead of its use.

US Patent:

7380047, May 27, 2008

Filed:

Sep 30, 2004

Appl. No.:

10/955780

Inventors:

Philip George Emma - Danbury CT, US
Allan Mark Hartstein - Chappaqua NY, US
Thomas Roberts Puzak - Ridgefield CT, US
Moinuddin Khalil Ahmed Qureshi - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 12/00

US Classification:

711 3, 711129, 711133, 711136, 709224

Abstract:

A memory system and method includes a cache having a filtered portion and an unfiltered portion. The unfiltered portion is divided into block sized components, and the filtered portion is divided into sub-block sized components. Blocks evicted from the unfiltered portion have selected sub-blocks thereof cached in the filtered portion for servicing requests.

US Patent:

7657726, Feb 2, 2010

Filed:

Oct 25, 2007

Appl. No.:

11/923902

Inventors:

Philip George Emma - Danbury CT, US
Allan Mark Hartstein - Chappaqua NY, US
Brian R. Prasky - Wappingers Falls NY, US
Thomas Roberts Puzak - Ridgefield CT, US
Moinuddin Khalil Ahmed Qureshi - Austin TX, US
Vijayalakshmi Srinivasan - New York NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 9/312

US Classification:

711213, 712240, 711137

Abstract:

A memory storage structure includes a memory storage device, and a first meta-structure having a first size and operating at a first speed. The first speed is faster than a second speed for storing meta-information based on information stored in a memory. A second meta-structure is hierarchically associated with the first meta-structure. The second meta-structure has a second size larger than the first size and operates at the second speed such that faster and more accurate prefetching is provided by coaction of the first and second meta-structures. A method is provided to assemble the meta-information in the first meta-structure and copy this information to the second meta-structure, and prefetching the stored information from the second meta-structure to the first meta-structure ahead of its use.

US Patent:

7732364, Jun 8, 2010

Filed:

Dec 28, 2007

Appl. No.:

12/003578

Inventors:

Bong-Kyu Chang - San Rafael CA, US
Huping Luo - Richmond CA, US
Moinuddin Ahmed - Hercules CA, US
Krishniah Parimi - Alamo CA, US
Saleh Elomari - Fairfield CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01J 38/10

US Classification:

502 53, 502 29, 502 32, 502155, 502167, 502150

Abstract:

A regeneration process for re-activating an ionic liquid catalyst, which is useful in a variety of reactions, especially alkylation reactions, and which has been deactivated by conjunct polymers. The process includes a reaction step and a solvent extraction step. The process comprises (a) providing the ionic liquid catalyst, wherein at least a portion of the ionic liquid catalyst is bound to conjunct polymers; and (b) reacting the ionic liquid catalyst with aluminum metal to free the conjunct polymers from the ionic liquid catalyst in a stirred reactor or a fixed reactor. The conjunct polymer is then separated from the catalyst phase by solvent extraction in a stirred extraction or packed column.

US Patent:

7747845, Jun 29, 2010

Filed:

May 12, 2004

Appl. No.:

10/844300

Inventors:

Brian Robert Prasky - Wappingers Falls NY, US
Moinuddin Khalil Ahmed Qureshi - Austin TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 9/00
G06F 9/44
G06F 7/38

US Classification:

712239, 712238

Abstract:

Disclosed is a method and apparatus providing the ability to create a multi-level prediction algorithm, whereby branch predictions beyond the first level of prediction are maintained at a secondary level because the prior level was unsuccessfully able to highly predict the direction of the stated branch accurately. A secondary level is smaller in size than the upper level through selected filtering thereby enabling high prediction accuracy of branches while minimizing the amount of hardware required to perform stated predictions.

US Patent:

7955999, Jun 7, 2011

Filed:

Dec 28, 2007

Appl. No.:

12/003577

Inventors:

Huping Luo - Richmond CA, US
Moinuddin Ahmed - Hercules CA, US
Krishniah Parimi - Alamo CA, US
Bong-Kyu Chang - San Rafael CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01J 31/00

US Classification:

502 22, 502 32, 502 53, 502 29, 502150

Abstract:

Disclosed are a system and an apparatus for regenerating an ionic liquid catalyst, which has been deactivated by conjunct polymers during any type of reaction producing conjunct polymers as a by-product, for example, isoparaffin-olefin alkylation. The system and apparatus are designed such that solvent extraction of conjunct polymers, freed from the ionic liquid catalyst through its reaction with aluminum metal, occurs as soon as the conjunct polymers de-bond from the ionic liquid catalyst.

US Patent:

8067656, Nov 29, 2011

Filed:

Nov 26, 2008

Appl. No.:

12/324601

Inventors:

Huping Luo - Richmond CA, US
Moinuddin Ahmed - Hercules CA, US
Krishniah Parimi - Alamo CA, US
Bong-Kyu Chang - Novato CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

C07C 2/58
C07C 2/60
C07C 7/12
B01J 38/56

US Classification:

585709, 585718, 585721, 585818, 502 31

Abstract:

A process for separating an ionic liquid from hydrocarbons employs a coalescer material having a stronger affinity for the ionic liquid than the hydrocarbons. The coalescer material can be a high surface area material having a large amount of contact area to which ionic liquid droplets dispersed in the hydrocarbons may adhere. The process includes feeding a mixture comprising ionic liquid droplets dispersed in hydrocarbons to a coalescer comprising the coalescer material. The process further includes a capture step involving adhering at least a portion of the ionic liquid droplets to the coalescer material to provide captured droplets and a coalescing step involving coalescing captured droplets into coalesced droplets. After the capture and coalescence steps, the coalesced droplets are allowed to fall from the coalescer material to separate the ionic liquid from the hydrocarbons and provide a hydrocarbon effluent.

US Patent:

8088338, Jan 3, 2012

Filed:

Mar 18, 2010

Appl. No.:

12/727180

Inventors:

Huping Luo - Richmond CA, US
Moinuddin Ahmed - Hercules CA, US
Krishniah Parimi - Alamo CA, US
Bong-Kyu Chang - San Rafael CA, US

Assignee:

Chevron U.S.A. Inc. - San Ramon CA

International Classification:

B01J 8/02
B01D 11/00

US Classification:

422211, 422187, 210634, 210638

Abstract:

Disclosed are a system and an apparatus for regenerating an ionic liquid catalyst, which has been deactivated by conjunct polymers during any type of reaction producing conjunct polymers as a by-product, for example, isoparaffin-olefin alkylation. The system and apparatus are designed such that solvent extraction of conjunct polymers, freed from the ionic liquid catalyst through its reaction with aluminum metal, occurs as soon as the conjunct polymers de-bond from the ionic liquid catalyst.