For the Inventor, By the Inventor

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Northbrook, IL, United States of America

Extel Corporation

USPTO Granted Patents = 18

Forward Citations = 220

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20 inventors (with patents filed for the assignee):

Gerhard Cless (3 out of 5 patents)

Edward L Kaplan (3 out of 3 patents)

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: Sort by Forward Citations

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),

Extel Corporation is a leading provider of innovative solutions for the semiconductor industry. Our products and services include advanced wafer processing equipment and technology, as well as comprehensive support and training for our customers. With a strong focus on research and development, we strive to deliver cutting-edge solutions that meet the evolving needs of our clients.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

18 Patents

#13 in Northbrook, IL

#877 in Illinois

#17,382 in US

#33,147 in the World

Northbrook, IL, United States of America

Extel Corporation

Forward Citations = 220

20 inventors:

Gerhard Cless (3 out of 5 patents)

Edward L Kaplan (3 out of 3 patents)

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)

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