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Trademarks = 4

Forward Citations = 121

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6 inventors (with patents filed for the assignee):

Melvin P Kejr (8 out of 10 patents)

Thomas M Christy (6 out of 15 patents)

Volker Wittig (4 out of 4 patents)

4. Gregory H Scott (3 out of 4 patents)

5. Michael B Carlin (1 out of 1 patent)

6. Lawrence E Screen (1 out of 1 patent)

11 patents: Sort by Forward Citations

1. 6029355 - Device for cutting soil sampling tubing (2000-02-29),

2. D397345 - Probe rod thread (1998-08-25),

3. 5639956 - Permeable membrane soil probe (1997-06-17),

4. 5635653 - Ground water sampling device (1997-06-03),

5. 5612498 - Ground water sampling device (1997-03-18),

6. 5606139 - Soil sample probe with retaining ring for holding core-catching (1997-02-25),

7. 5588771 - Connector for coupling a pair of rods (1996-12-31),

8. 5553979 - Pull cap for attachment to a probe rod (1996-09-10),

9. 5542481 - Drive point locking method and apparatus (1996-08-06),

10. 5503031 - Ground water sampling device (1996-04-02),

11. 5186263 - Soil sample probe (1993-02-16),

Kejr Engineering, Inc. is a leading engineering firm specializing in civil, structural, and environmental engineering services. With a team of experienced professionals, we provide innovative solutions for a wide range of projects, from residential developments to large-scale infrastructure projects. Our commitment to quality, safety, and sustainability sets us apart as a trusted partner for our clients.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

11 Patents

#4 in Salina, KS

#222 in Kansas

#27,470 in US

#51,671 in the World

Salina, KS, United States of America

Kejr Engineering, Inc.