For the Inventor, By the Inventor

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Wilmington, DE, United States of America

Callahan Cellular LLC

USPTO Granted Patents = 82

% Expired Patents = 52.4

EPO Patents = 40

Forward Citations = 298

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74 inventors (with patents filed for the assignee):

Raminda U Madurawe (11 out of 141 patents)

Richard Ian Olsen (7 out of 34 patents)

Darryl L Sato (7 out of 30 patents)

4. James R Gates (7 out of 33 patents)

5. Craig M Janik (6 out of 43 patents)

6. Dick Clarence Hardt (6 out of 12 patents)

7. Mike Kwon (5 out of 11 patents)

8. Craig M Hagopian (5 out of 11 patents)

9. Kazuhiko Shirai (5 out of 14 patents)

10. Bruce Borden (5 out of 9 patents)

11. Russell Brand (5 out of 8 patents)

12. Satoru Yukie (5 out of 16 patents)

13. Lars-Berno Fredriksson (4 out of 52 patents)

14. Feng-Qing Sun (4 out of 18 patents)

15. Jonathan Alan Leblang (3 out of 62 patents)

Core Competencies:

Digital Cameras

Telephony Terminal

Data Storage

Three Dimensional Integrated Circuits

Graduated Authentication

Audio Converter

Efficient Image Transmission

Network Appliance

Content Management

Automated Annotation

Vulnerability Assessment

User Interface

82 patents: Sort by Forward Citations

1. 11824869 - Graduated authentication in an identity management system (2023-11-21),

2. 11595424 - Network appliance for vulnerability assessment auditing over multiple networks (2023-02-28),

3. 11561931 - Information source agent systems and methods for distributed data storage and management using content signatures (2023-01-24),

4. 11363127 - Telephony terminal (2022-06-14),

5. 11157429 - Time and event based message transmission (2021-10-26),

6. 11025763 - Telephony terminal (2021-06-01),

7. 10911576 - Communications terminal, a system and a method for internet/network telephony (2021-02-02),

8. 10904262 - Graduated authentication in an identity management system (2021-01-26),

9. 10740546 - Automated annotation of a resource on a computer network using a network address of the resource (2020-08-11),

10. 10712999 - Audio converter device and method for using the same (2020-07-14),

11. 10694162 - Digital cameras with direct luminance and chrominance detection (2020-06-23),

12. 10631201 - Storage and playback device and method for using the same (2020-04-21),

13. 10609195 - Telephony terminal (2020-03-31),

14. 10594320 - Programmable structured arrays (2020-03-17),

15. 10579562 - Time and event based message transmission (2020-03-03),

Callahan Cellular LLC is a telecommunications company specializing in providing cellular services and solutions. With a focus on customer satisfaction, the company offers a range of products including mobile devices, accessories, and service plans tailored to meet the needs of both individual and business clients. Their commitment to innovation and quality ensures that customers have access to the latest technology and reliable service. Callahan Cellular LLC aims to enhance connectivity and communication for its users, making it a trusted choice in the telecommunications industry.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

82 Patents

#71 in Wilmington, DE 19808, undefined

#86 in

#4,518 in US

#9,238 in the World

Wilmington, DE, United States of America

Callahan Cellular LLC

Forward Citations = 298

74 inventors:

Raminda U Madurawe (11 out of 141 patents)

Richard Ian Olsen (7 out of 34 patents)

Darryl L Sato (7 out of 30 patents)

4. James R Gates (7 out of 33 patents)

5. Craig M Janik (6 out of 43 patents)

Please report any incorrect information to [email protected]

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