For the Inventor, By the Inventor

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Berkeley, CA, United States of America

Altex Scientific, Inc.

USPTO Granted Patents = 15

Trademarks = 1

Forward Citations = 261

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11 inventors (with patents filed for the assignee):

Haakon T Magnussen, Jr (8 out of 11 patents)

Emery Major (3 out of 10 patents)

Carl L Shackelford (3 out of 9 patents)

4. Roy P Moeller (2 out of 7 patents)

5. Scott N MacDonald (1 out of 2 patents)

6. Stephen J Ruskewicz (1 out of 19 patents)

7. Kenneth Rainin (1 out of 2 patents)

8. Ludovic S Filgas, Jr (1 out of 1 patent)

9. Alan C Berick (1 out of 2 patents)

10. Harry R McDonald (1 out of 1 patent)

11. James L McDonald (1 out of 1 patent)

15 patents: Sort by Forward Citations

1. 4820129 - Pressure measurement in fluid pump systems (1989-04-11),

2. 4408166 - Pulse width modulation decoder (1983-10-04),

3. 4399502 - Instrument control system (1983-08-16),

4. 4389163 - Pressure booster system for fluids (1983-06-21),

5. 4374620 - Photometric flow cell (1983-02-22),

6. 4358712 - Discharge lamp ballast (1982-11-09),

7. 4243071 - Sample injection valve (1981-01-06),

8. 4240429 - Needle injection device for delivering fluid (1980-12-23),

9. 4211486 - Spectrophotometer (1980-07-08),

10. 4205767 - Cannula injection device (1980-06-03),

11. 4180375 - Liquid chromatography pump (1979-12-25),

12. 4139469 - Fluid control mechanism (1979-02-13),

13. 4131393 - Fluid pump mechanism (1978-12-26),

14. D242708 - Valve housing or similar article (1976-12-14),

15. 3976400 - Gradient pump apparatus (1976-08-24),

Altex Scientific, Inc. is a research and development company based in Berkeley, California, specializing in innovative solutions for the life sciences sector. The organization focuses on the design and manufacture of advanced laboratory instruments and analytical tools that enhance scientific research and experimentation. With a commitment to quality and precision, Altex serves a diverse clientele, including academic institutions, government agencies, and commercial laboratories, contributing to advancements in various scientific fields.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

15 Patents

#44 in Berkeley, CA

#5,020 in California

#21,026 in US

#39,846 in the World

Berkeley, CA, United States of America

Altex Scientific, Inc.

Forward Citations = 261

11 inventors:

Haakon T Magnussen, Jr (8 out of 11 patents)

Emery Major (3 out of 10 patents)

Carl L Shackelford (3 out of 9 patents)

4. Roy P Moeller (2 out of 7 patents)

5. Scott N MacDonald (1 out of 2 patents)

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