logo

For the Inventor, By the Inventor

Northbrook, IL, United States of America

Extel Corporation


USPTO Granted Patents = 18

Forward Citations = 220

Loading Chart...
Loading Chart...

20 inventors (with patents filed for the assignee):

goldMedal Gerhard Cless (3 out of 5 patents)

silverMedal Edward L Kaplan (3 out of 3 patents)

bronzeMedal Edmund T Marciniec (2 out of 6 patents)

4.  Robert J Adler (2 out of 51 patents)

5.  Richard G Ryan (2 out of 2 patents)

6.  Donald P Martin (2 out of 2 patents)

7.  John R Fulton (2 out of 2 patents)

8.  George Smejkal (2 out of 2 patents)

9.  Melvin A Lace (1 out of 29 patents)

10.  Raymond E Kranz (1 out of 1 patent)

11.  Benjamin M Starr (1 out of 1 patent)

12.  Richard H Greischar (1 out of 1 patent)

13.  Lawrence W Markus (1 out of 1 patent)

14.  Patricio E Donoso (1 out of 1 patent)

15.  Prabhakar Pokala (1 out of 1 patent)


18 patents:

1. 4850008 - Method and apparatus for discrimination between different kinds of data (1989-07-18),
2. 4839802 - Adaptation of computer to communication operation (1989-06-13),
3. 4392755 - Magnetic dot matrix printing (1983-07-12),
4. 4392754 - Magnetic dot matrix printing method and apparatus (1983-07-12),
5. 4363461 - Tape reader motor mount (1982-12-14),
6. 4346854 - Printer paper take-up and storage device (1982-08-31),
7. 4298786 - Thin film thermal print head (1981-11-03),
8. 4242004 - Dot matrix printhead driver (1980-12-30),
9. 4206541 - Method of manufacturing thin film thermal print heads (1980-06-10),
10. 4063045 - Telecommunication line switching circuit (1977-12-13),
11. 4044946 - Tape punch machine (1977-08-30),
12. 4037705 - Descender printing system for dot matrix printer (1977-07-26),
13. 4019676 - Tape punch machine (1977-04-26),
14. 3990559 - Method and apparatus for multiple speed print rate control for dot (1976-11-09),
15. 3973662 - Acceleration control system for high speed printer (1976-08-10),
Company Overview
Extel Corporation, based in Northbrook, Illinois, specializes in advanced technology solutions, focusing on the development and manufacturing of high-performance electronic components and systems. The company is recognized for its expertise in areas such as telecommunications, aerospace, and defense, providing innovative products that enhance connectivity and operational efficiency. With a commitment to research and development, Extel continues to push the boundaries of technology, catering to diverse industries and contributing to advancements in electronic engineering.
Profile summary synthesized from public USPTO records and patent filings.

logo

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

18 Patents

#15 in Northbrook, IL

#915 in Illinois

#17,963 in US

#34,217 in the World

Northbrook, IL (US)
Northbrook, IL, United States of America

Extel Corporation

Forward Citations = 220

20 inventors:

goldMedal Gerhard Cless (3 out of 5 patents)

silverMedal Edward L Kaplan (3 out of 3 patents)

bronzeMedal Edmund T Marciniec (2 out of 6 patents)

4.  Robert J Adler (2 out of 51 patents)

5.  Richard G Ryan (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Extel Corporation. Retrieved from https://idiyas.com/company/extel

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]
Loading…