Michael A Chen

US Patent:

7147641, Dec 12, 2006

Filed:

May 30, 2001

Appl. No.:

09/866841

Inventors:

Michael C. Chen - King of Prussia PA, US

International Classification:

A61B 17/56

US Classification:

606 72, 606104

Abstract:

The invention relates to a device for attaching fixation elements to bone, having a longitudinal member with a channel extending therein adapted for receiving at least one fixation element. A shaft extends within the channel and is positioned coaxially within at least a portion of the longitudinal member and at least a portion of the shaft is retained within the longitudinal member and a distal end of the shaft is configured and adapted to contact at least a portion of the fixation element received within the longitudinal member. The longitudinal member is moveable with respect to the shaft to drive the fixation element into bone.

US Patent:

7217791, May 15, 2007

Filed:

Nov 6, 2003

Appl. No.:

10/702305

Inventors:

Michael C. Chen - Potomac MD, US
Zhongming Li - Gaithersberg MD, US
Dong-Sheng Chen - Potomac MD, US

Assignee:

Synergy America, Inc. - Rockville MD

International Classification:

C07K 1/00
A61K 39/00
A61K 39/02
A61K 39/385

US Classification:

530350, 4241851, 4241901, 4241931, 42419711, 4242341

Abstract:

The invention provides polypeptides, polysaccharide-polypeptide conjugates, and expression vectors for treating or preventing pneumococcal infection. The compositions induce an anti-pneumococcal immune response when administered to a mammal. The compositions can be used prophylactically to vaccinate an individual and/or therapeutically to induce a therapeutic immune response in an infected individual.

US Patent:

7585669, Sep 8, 2009

Filed:

May 14, 2007

Appl. No.:

11/748270

Inventors:

Michael C. Chen - Potomac MD, US
Zhongming Li - Gaithersberg MD, US
Dong-Sheng Chen - Potomac MD, US

Assignee:

Synergy America, Inc. - Rockville MD

International Classification:

C12N 15/00

US Classification:

4353201

Abstract:

The invention provides polypeptides, polysaccharide-polypeptide conjugates, and expression vectors for treating or preventing pneumococcal infection. The compositions induce an anti-pneumococcal immune response when administered to a mammal. The compositions can be used prophylactically to vaccinate an individual and/or therapeutically to induce a therapeutic immune response in an infected individual.

US Patent:

7653920, Jan 26, 2010

Filed:

Jan 24, 2005

Appl. No.:

11/041655

Inventors:

Michael A. Chen - Wallingford PA, US

Assignee:

Comcast Cable Communications, LLC - Philadelphia PA

International Classification:

H04H 60/33
H04H 60/32
H04N 7/167
H04L 9/00

US Classification:

725 9, 725 14, 725 31, 380264

Abstract:

A television program ratings method and system includes transferring information associated with households from a cable provider to a ratings provider such that the ratings provider has access to information associated with sampled households and lacks access to information associated with non-sampled households. To this end, identity information and usage information associated with the households are respectively anonymized and encrypted. Knowledge of the identities of the sampled households enables the anonymized identity information and the encrypted usage information for the sampled households to be respectively de-anonymized and decrypted. The ratings provider knows which households are sampled households. As such, the ratings provider de-anonymizes and decrypts the information associated with the sampled households and then uses the de-anonymized and decrypted information to determine television program ratings. The cable provider anonymizes and encrypts the information for all households as the cable provider does not know which households are sampled households.

US Patent:

7680061, Mar 16, 2010

Filed:

Apr 7, 2005

Appl. No.:

11/100881

Inventors:

Walter F. Michel - Glenside PA, US
Michael A. Chen - Wallingford PA, US

Assignee:

Comcast Cable Holdings, LLC - Philadelphia PA

International Classification:

G01R 31/08
H04L 12/28
H04N 7/16
H04N 7/173

US Classification:

370252, 370431, 725 25, 725114

Abstract:

A system and method for identifying which signals provided by a head-end are accessible to CPE of a subscriber in an HFC network. The method includes obtaining a partial list of signals accessible to the CPE, and then applying heuristic rules on the partial list to generate a complete accessible signal list. Obtaining the partial list includes discovering signal information regarding a subset of the signals which are accessible to the CPE; using the discovered signal information to obtain a signal identification of a signal accessible to the CPE; and generating the partial list based on the obtained signal identification. Applying a heuristic rule includes using a bit mask within the obtained signal identification or a naming convention of the obtained signal identification to identify other associated signals. The partial list is then generated based on the obtained signal identification and the signal identifications of the other associated signals.

US Patent:

7958523, Jun 7, 2011

Filed:

Dec 18, 2009

Appl. No.:

12/641923

Inventors:

Michael A Chen - Wallingford PA, US

Assignee:

Comcast Cable Communications, LLC - Philadelphia PA

International Classification:

H04H 60/33
H04H 60/32
H04N 7/167
H04L 9/00

US Classification:

725 9, 725 14, 725 31, 380264

Abstract:

A television program ratings method and system includes transferring information associated with households from a cable provider to a ratings provider such that the ratings provider has access to information associated with sampled households and lacks access to information associated with non-sampled households. To this end, identity information and usage information associated with the households are respectively anonymized and encrypted. Knowledge of the identities of the sampled households enables the anonymized identity information and the encrypted usage information for the sampled households to be respectively de-anonymized and decrypted. The ratings provider knows which households are sampled households. As such, the ratings provider de-anonymizes and decrypts the information associated with the sampled households and then uses the de-anonymized and decrypted information to determine television program ratings. The cable provider anonymizes and encrypts the information for all households as the cable provider does not know which households are sampled households.

US Patent:

8052691, Nov 8, 2011

Filed:

Nov 18, 2004

Appl. No.:

10/992259

Inventors:

Ralph Fritz Zwirnmann - Roslyn PA, US
Michael C. Chen - King of Prussia PA, US

Assignee:

Synthes USA, LLC - West Chester PA

International Classification:

A61F 2/46

US Classification:

606 86R, 606104

Abstract:

The invention relates to a device for attaching fixation elements to bone, having a longitudinal member with a channel extending therein adapted for receiving at least one fixation element. A shaft extends within the channel and is positioned coaxially within at least a portion of the longitudinal member and at least a portion of the shaft is retained within the longitudinal member and a distal end of the shaft is configured and adapted to contact at least a portion of the fixation element received within the longitudinal member. A spring is positioned adjacent the shaft for resiliently biasing the shaft in an axial direction and the shaft is moveable with respect to the longitudinal member to drive the fixation element into bone.

US Patent:

8079052, Dec 13, 2011

Filed:

Jul 14, 2004

Appl. No.:

10/891460

Inventors:

Michael Chen - Wallingford PA, US
Bruce R. Bradley - Wayne PA, US

Assignee:

Concurrent Computer Corporation - Duluth GA

International Classification:

H04N 7/173

US Classification:

725 88, 725 86, 725102

Abstract:

Methods and apparatuses and systems for inserting advertisement segments into trick content. Advertisement segments present in the original video content are extracted from the video content and merged with other navigation segements to generate associated trick content. The advertisement segment may be inserted into the trick files may be displayed at their normal playback speed, a different apparent playback speed, or displayed in a different direction. Additionally, alternative content of the advertisement segment may be inserted into the advertisement segment to provide specialized versions of the advertisement content to be displayed in trick content mode, or the content may be completely different fro the original advertisement content, such as session specific advertisement content or even user specific advertisement content based on user preferences.