David K Douglas

US Patent:

6449667, Sep 10, 2002

Filed:

Jul 16, 1999

Appl. No.:

09/354425

Inventors:

Mahesh N. Ganmukhi - Littleton MA
Jeffrey V. Hill - Santa Clara CA
Monica C. Wong-Chan - Cambridge MA
David C. Douglas - Concord MA

Assignee:

T. M. Patents, L.P. - Boston MA

International Classification:

G06F 1300

US Classification:

710 28, 709253, 370408, 712 11, 712 29

Abstract:

A digital computer comprising a plurality of processors interconnected by a network for transferring messages among the processors. At least one processor generates messages of a configuration type. The network comprises a plurality of nodes interconnected in a tree pattern in a series of levels from a lower leaf level to an upper physical root level, with the leaf nodes connected to the processors. Each of the nodes includes a root flag that can be set or cleared in response to a message of the configuration type to establish the node as a logical root. For each node, if the node is a logical root it transfers messages received from a node at a lower level in the tree back down the tree, but if the node is not a logical root it transfers messages received at a lower level node to a higher level node.

US Patent:

6908558, Jun 21, 2005

Filed:

Mar 19, 2003

Appl. No.:

10/392215

Inventors:

David J. Stinson - Woodstock GA, US
David A. Douglas - Garland TX, US
Roy E. Seibert - McKinney TX, US
Jose A. Villarreal - Kemp TX, US

International Classification:

B01D037/00
B01D029/56
B41M001/06

US Classification:

210660, 210767, 210805, 210806, 210252, 210258, 210259, 210282, 210287, 2105021, 101425, 101483, 1014501

Abstract:

A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a posttreatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post-treatment filter preferably comprises a zeolite filter.

US Patent:

7054905, May 30, 2006

Filed:

Mar 30, 2000

Appl. No.:

09/539269

Inventors:

Stephen R. Hanna - Bedford MA, US
David C. Douglas - Concord MA, US
Yassir K. Elley - Waltham MA, US
Radia J. Perlman - Acton MA, US
Sean J. Mullan - Dublin, IE
Anne H. Anderson - Acton MA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G06F 15/16
H04L 9/00

US Classification:

709206, 709229, 713168

Abstract:

One embodiment of the present invention provides a system that replaces an attachment to an email message with a reference to a location where the attachment is stored. Upon receiving the email message, the system examines the email message to determine if the email message includes an attachment. If the email message includes the attachment, the system stores the attachment at a location on a communication network from which the attachment can be retrieved. The system also modifies the email message by replacing the attachment with a reference specifying the location of the attachment, and sends the modified email message to a recipient of the email message. In one embodiment of the present invention, the recipient receives the modified email message and uses the reference specifying the location of the attachment to retrieve the attachment across the communication network.

US Patent:

7087159, Aug 8, 2006

Filed:

Jul 7, 2005

Appl. No.:

11/176491

Inventors:

David J. Stinson - Woodstock GA, US
David A. Douglas - Garland TX, US
Roy E. Seibert - McKinney TX, US
Jose A. Villarreal - Kemp TX, US

International Classification:

B01D 15/10
B01D 15/18
B01D 29/56
B41F 7/24

US Classification:

210167, 2101951, 210196, 210251, 210258, 210259, 210282, 210287, 2104161, 2105021, 210663, 210669, 210767, 210805, 210806, 101147, 101148, 101364, 1014501

Abstract:

A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a post treatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post treatment filter preferably comprises a zeolite filter.

US Patent:

7112282, Sep 26, 2006

Filed:

Aug 5, 2005

Appl. No.:

11/198430

Inventors:

David J. Stinson - Woodstock GA, US
David A. Douglas - Garland TX, US
Roy E. Seibert - McKinney TX, US
Jose A. Villarreal - Kemp TX, US

International Classification:

B01D 37/00
B01D 29/56
B01D 15/10
B01D 15/18
B41F 7/24

US Classification:

210663, 210669, 210767, 210805, 210806, 2101951, 210196, 210251, 210258, 210259, 210282, 210287, 2104161, 2105021, 210167, 101147, 101148, 101364, 1014501

Abstract:

A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a post treatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post treatment filter preferably comprises a zeolite filter.

US Patent:

7314547, Jan 1, 2008

Filed:

Jul 25, 2006

Appl. No.:

11/459671

Inventors:

David J. Stinson - Woodstock GA, US
David D. Douglas - Garland TX, US
Roy E. Seibert - McKinney TX, US
Jose A. Villarreal - Kemp TX, US

International Classification:

B01D 29/56
B01D 15/10
B01D 15/18
B41F 7/24

US Classification:

21016701, 210669, 210767, 210805, 210806, 2101951, 210196, 210251, 210258, 210259, 210282, 210287, 2104161, 2105021, 210663, 101147, 101148, 101364, 1014501

Abstract:

A method of and apparatus for extending the life of fountain solutions used in commercial printing presses comprises withdrawing fountain solution from the dampener recirculation system of a printing press and directing the withdrawn fountain solution through a sediment prefilter, a separation filter, and a post treatment filter. The sediment prefilter preferably comprises a melt blown polypropylene filter; the separation filter preferably comprises a diatomaceous earth filter; and the post treatment filter preferably comprises a zeolite filter.

US Patent:

7410808, Aug 12, 2008

Filed:

Nov 19, 2004

Appl. No.:

10/993340

Inventors:

Steven J. Saul - Arlington MA, US
Robert J. Markovsky - Brentwood NH, US
David W. Douglas - Andover MA, US

Assignee:

Charm Sciences, Inc. - Lawrence MA

International Classification:

G01N 33/53

US Classification:

436514, 422 56, 422 57, 422 58, 422 61, 422187, 4352871, 435805, 436518, 436524, 436525, 436828

Abstract:

Embodiments described herein include methods and assays for detecting an analyte in a sample using a plurality of control zone capture agents. Some embodiments include detection of multiple analytes in a sample utilizing a plurality of analyte binders and a control zone containing multiple control zone capture agents. In some embodiments, the multiple control zone capture agents capture a plurality of binders within one control zone. Test results are determined by comparison of the control zone signal to a test zone signal.

US Patent:

7805606, Sep 28, 2010

Filed:

Feb 25, 2003

Appl. No.:

10/372397

Inventors:

Chet Birger - Lexington MA, US
David C. Douglas - Concord MA, US
Steven Rosenthal - Lexington MA, US
Kenneth R. Traub - Lexington MA, US

Assignee:

BEA Systems, Inc. - San Jose CA

International Classification:

H04L 9/32

US Classification:

713168, 713169, 713170, 726 3, 726 4, 726 5, 726 10

Abstract:

A computer architecture for enterprise device applications provides a real-time, bi-directional communication layer for device communication. An identity-based communications layer provides for secure, end-to-end telemetry and control communications by enabling mutual authentication and encryption between the devices and the enterprise. A unique identity is assigned to each device, user and application to provide security services. A communications session is established between two devices using an authentication service that authenticates the device that is initiating the establishment of the communications session with another device. After authenticating the initiating device, the authentication service provides to the initiating device the network address of the other device and an authentication credential for use in the communications session between the initiating device and the other device.