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For the Inventor, By the Inventor

New York, NY, United States of America

At+t Corp.


USPTO Granted Patents = 4,208

% Expired Patents = 16.0



Trademarks = 52

Forward Citations = 191,247

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3,538 inventors (with patents filed for the assignee):

goldMedal Hossein Eslambolchi (182 out of 417 patents)

silverMedal John Sinclair Huffman (88 out of 105 patents)

bronzeMedal Mark Jeffrey Foladare (81 out of 128 patents)

4.  Shelley Betty Goldman (79 out of 105 patents)

5.  Roy Philip Weber (72 out of 86 patents)

6.  David Phillip Silverman (67 out of 78 patents)

7.  Spencer Wang (56 out of 76 patents)

8.  Irwin Gerszberg (55 out of 682 patents)

9.  Jesse Eugene Russell (50 out of 104 patents)

10.  Marian Rogers Croak (49 out of 212 patents)

11.  Robert Raymond Miller, Ii (48 out of 233 patents)

12.  Kadangode K Ramakrishnan (47 out of 148 patents)

13.  Robert Edward Markowitz (46 out of 59 patents)

14.  Joseph Thomas O'Neil (45 out of 78 patents)

15.  Kenneth H Rosen (45 out of 85 patents)


Core Competencies:
Transmit Diversity
Packet-Based Networks
Voice Activity Detection
DDoS Mitigation
Channel Coding
Optical Transmission
Data Management
Network Security
VoIP Services
Multi-Access Systems
Traffic Management
Emergency Services

4,208 patents:

1. 8155177 - Equalization of transmit diversity space-time coded signals (2012-04-10),
2. 8155097 - System and method for estimating interference in a packet-based wireless network (2012-04-10),
3. 8139695 - Combined channel coding and space-block coding in a multi-antenna arrangement (2012-03-20),
4. 8046577 - Secure IP access protocol framework and supporting network architecture (2011-10-25),
5. 7917356 - Operating method for voice activity detection/silence suppression system (2011-03-29),
6. 7864902 - Differential transmitter diversity technique for wireless communications (2011-01-04),
7. 7864867 - Video coder employing pixel transposition (2011-01-04),
8. 7844737 - Subscription-based priority interactive help services on the internet (2010-11-30),
9. 7826443 - Method for network-based remote IMS CPE troubleshooting (2010-11-02),
10. 7818283 - Service assurance automation access diagnostics (2010-10-19),
11. 7818177 - System and method for accessing and annotating electronic medical records using a multi-modal interface (2010-10-19),
12. 7805266 - Method for automated detection of data glitches in large data sets (2010-09-28),
13. 7805032 - Remote monitoring of undersea cable systems (2010-09-28),
14. 7801290 - Consolidated access and administration of customized telephone calling service (2010-09-21),
15. 7800743 - Method and apparatus for fiber optic signature recognition (2010-09-21),
Company Overview
AT&T Corp., headquartered in New York, NY, is a leading player in the wireless communication sector, focusing on advanced technologies that enhance connectivity and network performance. The company specializes in areas such as transmit diversity, packet-based networks, and voice activity detection, contributing to robust communication solutions. Additionally, AT&T is engaged in developing innovative strategies for DDoS mitigation, channel coding, and optical transmission, ensuring secure and efficient data management across its extensive network infrastructure.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

At+t Corp. USPTO Patent Assignee Logo
4,208 Patents

#4 in New York, NY

#8 in New York

#104 in US

#222 in the World

New York, NY (US)
New York, NY, United States of America

At+t Corp.

Forward Citations = 191,247

3,538 inventors:

goldMedal Hossein Eslambolchi (182 out of 417 patents)

silverMedal John Sinclair Huffman (88 out of 105 patents)

bronzeMedal Mark Jeffrey Foladare (81 out of 128 patents)

4.  Shelley Betty Goldman (79 out of 105 patents)

5.  Roy Philip Weber (72 out of 86 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: At+t Corp.. Retrieved from https://idiyas.com/company/at-plus-t

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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