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For the Inventor, By the Inventor

Wilmington, DE, United States of America

Callahan Cellular LLC


USPTO Granted Patents = 82


Forward Citations = 290

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74 inventors (with patents filed for the assignee):

goldMedal Raminda U Madurawe (11 out of 141 patents)

silverMedal Richard Ian Olsen (7 out of 34 patents)

bronzeMedal 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:
Graduated Authentication
Vulnerability Assessment
Distributed Data Storage
Internet Telephony
Audio Converter Devices
Digital Cameras
Three Dimensional Integrated Circuits
Secure Messaging
Efficient Image Transmission
Programmable Structured Arrays
Content Management Systems
Predictive Coding

82 patents:

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.

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USPTO Data Jan 1 1976 - Jan 20 2026

82 Patents

#69 in Wilmington, DE 19808, undefined

#88 in

#4,383 in US

#9,019 in the World

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Wilmington, DE, United States of America

Callahan Cellular LLC

Forward Citations = 290

74 inventors:

goldMedal Raminda U Madurawe (11 out of 141 patents)

silverMedal Richard Ian Olsen (7 out of 34 patents)

bronzeMedal 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)

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