For the Inventor, By the Inventor

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Maumee, OH, United States of America

Spectra Group Limited, Inc.

USPTO Granted Patents = 20

% Expired Patents = 10.0

Forward Citations = 1,386

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24 inventors (with patents filed for the assignee):

Douglas C Neckers (19 out of 50 patents)

Alexandre Mejiritski (6 out of 11 patents)

Oleg V Grinevich (5 out of 5 patents)

4. Jianmin Shi (3 out of 33 patents)

5. John H Malpert (3 out of 7 patents)

6. Dustin B Martin (2 out of 6 patents)

7. Kathleen G Specht (2 out of 2 patents)

8. Afranio Torres-Filho (2 out of 2 patents)

9. Wolter F Jager (2 out of 2 patents)

10. Jian Chang Song (2 out of 2 patents)

11. Violeta Lungu (1 out of 2 patents)

12. Kesheng Feng (1 out of 2 patents)

13. Alexander Mejiritski (1 out of 1 patent)

14. Petr Serguievski (1 out of 1 patent)

15. Thomas F Marino (1 out of 8 patents)

20 patents: Sort by Forward Citations

1. 6586494 - Radiation curable inkjet composition (2003-07-01),

2. 6479217 - Method for producing selectively colorable printing plates (2002-11-12),

3. 6433035 - Selectively colorable polymerizable compositions (2002-08-13),

4. 6309797 - Selectively colorable polymerizable compositions (2001-10-30),

5. 6211262 - Corrosion resistant, radiation curable coating (2001-04-03),

6. 6200646 - Method for forming polymeric patterns, relief images and colored polymeric bodies using digital light processing technology (2001-03-13),

7. 6166233 - Onium gallates cationic initiators (2000-12-25),

8. 616623 - Onium gallates cationic initiators (2000-12-26),

9. 5998496 - Photosensitive intramolecular electron transfer compounds (1999-12-07),

10. 5955002 - Method for determining properties of a polymer coating or film cured by (1999-09-21),

11. 5942554 - Method for forming highly colored polymeric bodies (1999-08-24),

12. 5717217 - Method for determining thickness, degree of cure and other properties of (1998-02-10),

13. 5677107 - Production of three-dimensional objects (1997-10-14),

14. 5639802 - Cationic polymerization (1997-06-17),

15. 5623080 - Fluorone and pyronin Y derivatives (1997-04-22),

Spectra Group Limited, Inc. is a technology-driven organization based in Maumee, Ohio, specializing in advanced communication solutions. The company focuses on developing innovative products that enhance secure and reliable data transmission across various sectors. With a strong emphasis on research and development, Spectra Group is dedicated to pushing the boundaries of technology in fields such as telecommunications and defense, ensuring robust connectivity and operational efficiency for its clients.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

20 Patents

#9 in Maumee, OH

#714 in Ohio

#16,382 in US

#31,233 in the World

Maumee, OH, United States of America

Spectra Group Limited, Inc.

Forward Citations = 1,386

24 inventors:

Douglas C Neckers (19 out of 50 patents)

Alexandre Mejiritski (6 out of 11 patents)

Oleg V Grinevich (5 out of 5 patents)

4. Jianmin Shi (3 out of 33 patents)

5. John H Malpert (3 out of 7 patents)

Please report any incorrect information to [email protected]

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