James A Sievert Deceased1615 2Nd St N, Stillwater, MN 55082

6687729, Feb 3, 2004

Dec 20, 1999

09/468493

James A. Sievert - Lino Lakes MN
Mark K. Vallevand - Lino Lakes MN

Unisys Corporation - Blue Bell PA

G06F 900

709102, 709105, 709100

A system and method for managing a pool of threads for executing thread operations. A thread pool is instantiated which includes a plurality of threads, and a work queue having program controllable states is instantiated. Thread operations are queued to the work queue when the work queue is in a running or suspended state, and when the work queue is in a stopped state requests to queue thread operations are denied. The work queue supports controlled allocation of thread resources to a variety of thread operations.

6721942, Apr 13, 2004

Mar 31, 2000

09/540258

James A. Sievert - Lino Lakes MN

Unisys Corporation - Blue Bell PA

G06F 945

717137, 717124, 717116, 717164, 717165, 717167, 719329

Methods for converting from a COM interface pointer to an underlying C++ object are described in various embodiments. In the various embodiments, classes are constructed in support of the underlying C++ object. The classes are used to enforce rules safely convert a COM interface pointer. One rule is that a COM interface to be converted cannot be marshaled. A second rule is that an object requesting the C++ object must have legal access to the COM interface (for example, the same execution unit). A third rule is that the object type of the COM interface must be in the inheritance hierarchy of the C++ object.

6832376, Dec 14, 2004

Sep 29, 1999

09/409008

James A. Sievert - Lino Lakes MN
Mark K. Vallevand - Lino Lakes MN

Unisys Corporation - Blue Bell PA

G06F 946

718102, 718103

A method and apparatus for reusing a thread for different programmed operations are provided in various embodiments. In one embodiment, different application operations are defined as subclasses of a thread operation class, and a thread is implemented with a thread class. In one embodiment, the application operations can be queued to the thread for scheduled execution using the thread. In another embodiment, a first application operation can start a thread and be executed therewith, while a second application operation can attach to the thread for execution.

6912541, Jun 28, 2005

Dec 1, 2000

09/727612

James A. Sievert - Lino Lakes MN, US

Unisys Corporation - Blue Bell PA

G06F017/00

707103R, 719310, 717116, 717140

Method and apparatus for implementing persistent data in object-oriented programs. A class declaration is separated into two parts, a first structure type for storage of one or more data values, and a class that derives from the structure type. Objects of the structure type are instantiated and initialized in the source program. The class definition includes a static method that converts an object of the structure type to an instance of the class in response to a reference to the method. Thereby, memory for the objects is allocated and data values are assigned to the objects at compile-time.

7069540, Jun 27, 2006

Jul 2, 2001

09/897552

James A. Sievert - Lino Lakes MN, US

Unisys Corporation - Blue Bell PA

G06F 9/44

717120, 717116

Software and methods for extending preexisting objects to support persistence. One use of the present invention is to extend component object model (COM) objects to support persistence in a simple, predefined system. COM objects may be saved to persistence storage and loaded from persistence storage using user-provided save and load methods. When objects are constructed, the objects are added to a Persistent Object Registry. Objects preferably utilize smart pointers, rather than simple pointers, in order to enable restoration of the pointer values after a save and load cycle. The smart pointers include an object ID along with the address. The object ID, together with the information stored in the Persistent Object Registry, may be used to restore a pointer value after loading. Objects may be saved by streaming the objects out and loaded by streaming the objects back into memory from a file.

7120899, Oct 10, 2006

Oct 21, 1999

09/422018

James A. Sievert - Lino Lakes MN, US

Unisys Corporation - Blue Bell PA

G06F 9/44

717116, 717165

A method for implementing a hierarchy of component object model interfaces. A hierarchy of component object model interfaces is defined in which an interface at a lowest level of the hierarchy inherits from an interface at the highest level of the hierarchy. A class is defined that includes a first template class that is associated with the highest level of the hierarchy. A second template class inherits from the first template class and is associated with the lowest level of the hierarchy. The second template class is instantiated with an interface as a template parameter. Thus, the instantiation of an object of the most specialized class provides the base interface from which the most generalized class derives.

7146414, Dec 5, 2006

Nov 6, 2002

10/289024

James A. Sievert - Lino Lakes MN, US
Douglas P. Van Vreede - Vadnais Heights MN, US

Unisys Corporation - Blue Bell PA

G06F 15/173

709223, 709224

A method and apparatus for operating a server system. In one embodiment a server-control element is coupled to the server system and is configured to provide access to management functions for managing the server system. The server-control element generates event reports in response to status data received from the server system, each event report containing status data indicative of an operational characteristic of the server system. A bridge is coupled to the server-control element and is configured to register with the server-control element to receive events reports. The bridge stores data from the event reports. Command requests received from a bridge-type client by the bridge are submitted to the server-control element, the commands specified by the command requests for invoking the management functions. The bridge provides the stored data from event reports to the bridge-type client in response to requests for the stored data.

7266827, Sep 4, 2007

Oct 6, 2003

10/679635

James A. Sievert - Lino Lakes MN, US

Unisys Corporation - Blue Bell PA

G06F 9/44
G06F 9/46
G06F 9/54

719330, 719311, 719315

Method and apparatus for exposing an application object model to web-based clients. The various embodiments involve parsing each HTTP-form-processing request received from a client by a web server. As the property names are obtained form the HTTP-form-processing request, the objects in the object model are traversed. When the end of the HTTP-form-processing request is reached and the object model is traversed, a selected property of a referenced object is returned to the client.