William R Swift

US Patent:

61345458, Oct 17, 2000

Filed:

Jan 30, 1998

Appl. No.:

9/016558

Inventors:

Waqar Sadiq - Rochester Hills MI
Fred Arthur Cummins - Farmington Hills MI
William Earl Swift - Frisco TX

Assignee:

Electronics Data Systems Corporation - Plano TX

International Classification:

G06F 1730

US Classification:

707 3

Abstract:

One aspect of the invention is a method for processing a query. The method comprises receiving a query requesting at least one specific attribute of selected ones of a plurality of objects satisfying a query criteria. The query is directed to a database containing state data for the plurality of objects. A data structure is generated in response to the query, the data structure comprising, for each object satisfying the query criteria, each specific attribute requested by the query and the identifier of the object, even if the identifier of the object was not requested as a specific attribute in the query.

US Patent:

60321539, Feb 29, 2000

Filed:

Jan 30, 1998

Appl. No.:

9/016077

Inventors:

Waqar Sadiq - Rochester Hills MI
Fred Arthur Cummins - Farmington Hills MI
Steven H. Marney - Lake Orion MI
William Earl Swift - Frisco TX

Assignee:

Electric Data Systems Corporation - Plano TX

International Classification:

G06F 1730

US Classification:

707103

Abstract:

One aspect of the invention is a method for maintaining persistence in a shared object system. A request is received to update a persistent record of a shared object's state wherein the persistent record of the shared object's state is contained in a database. At least one SQL statement is dynamically generated in response to the request. That statement is generated using a data structure comprising data reflecting at least a portion of the state of the shared object and a map associating attributes to the shared object with the location of those attributes in the database. An SQL statement is then sent to the database.

US Patent:

56973071, Dec 16, 1997

Filed:

Dec 4, 1995

Appl. No.:

8/522369

Inventors:

Paul A. Nelson - Wheaton IL
William M. Swift - Downers Grove IL

Assignee:

The University of Chicago - Chicago IL

International Classification:

F23J 1100

US Classification:

110345

Abstract:

A process for treating organic waste materials without venting gaseous emissions to the atmosphere which includes oxidizing the organic waste materials at an elevated temperature not less than about 500. degree. C. with a gas having an oxygen content in the range of from about 20% to about 70% to produce an oxidation product containing CO. sub. 2 gas. The gas is then filtered to remove particulates, and then contacted with an aqueous absorbent solution of alkali metal carbonates or alkanolamines to absorb a portion of the CO. sub. 2 gas from the particulate-free oxidation product. The CO. sub. 2 absorbent is thereafter separated for further processing. A process and system are also disclosed in which the waste materials are contacted with a reactive medium such as lime and product treatment as described.

US Patent:

59917660, Nov 23, 1999

Filed:

Dec 2, 1997

Appl. No.:

8/982338

Inventors:

Waqar Sadiq - Rochester Hills MI
Fred Arthur Cummins - Farmington Hills MI
William Earl Swift - Frisco TX

Assignee:

Electronic Data Systems Corporation - Plano TX

International Classification:

G06F 15163

US Classification:

707103

Abstract:

One aspect of the invention is a method for managing redundant objects in a distributed object system. A transaction service runs on a computer. At least two copies of the instance variables of a distributed object are maintained in a separate database. The distributed object (46) has a polymorphism of an interface object instantiation method. At least two copies of an interface object (48) are instantiated wherein each interface object (48) is associated with one of the copies of the instance variables of the distributed object (46). The interface objects (48) are instantiated using the polymorphism. A list of interface objects (48) is maintained with the distributed object (46). Each copy of the instance variables of the distributed object (46) are modified by traversing the list of interface objects (48) and sending a message with modification parameters to each interface object (48) on the list.

US Patent:

53356098, Aug 9, 1994

Filed:

Apr 29, 1993

Appl. No.:

8/055360

Inventors:

Paul A. Nelson - Wheaton IL
William M. Swift - Downers Grove IL

Assignee:

University of Chicago - Chicago IL

International Classification:

F23G 500

US Classification:

110346

Abstract:

A process and system for treating organic waste materials without venting gaseous emissions to the atmosphere. A fluidized bed including lime particles is operated at a temperature of at least 500. degree. C. by blowing gas having 20%/70% oxygen upwardly through the bed particles at a rate sufficient to fluidize same. A toxic organic waste material is fed into the fluidized bed where the organic waste material reacts with the lime forming CaCO. sub. 3. The off gases are filtered and cooled to condense water which is separated. A portion of the calcium carbonate formed during operation of the fluidized bed is replaced with lime particles. The off gases from the fluidized bed after drying are recirculated until the toxic organic waste material in the bed is destroyed.