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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),
AT&T Corp. is a leading telecommunications company based in the United States, providing a wide range of services including mobile and fixed-line voice, broadband, and digital television. Founded in 1885, AT&T has evolved through numerous mergers and acquisitions, becoming one of the largest providers of telecommunications equipment and services globally. The company is known for its extensive wireless network, innovative technology solutions, and commitment to customer service. AT&T also invests in various sectors, including entertainment and media, through its ownership of WarnerMedia. With a focus on connectivity and digital transformation, AT&T aims to enhance the way people communicate and access information.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 15 2026

At+t Corp.
4,208 Patents

#4 in New York, NY

#8 in New York

#104 in US

#219 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)

Please report any incorrect information to [email protected]
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