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 = 257

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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 is a leading provider of scientific research services and solutions. We specialize in offering innovative solutions for drug discovery, preclinical development, and laboratory testing. Our team of experienced scientists and researchers are dedicated to helping our clients accelerate their research and development processes. With a focus on quality, reliability, and efficiency, Altex Scientific is committed to supporting the advancement of scientific discovery.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

15 Patents

#37 in Berkeley, CA

#4,865 in California

#20,400 in US

#38,669 in the World

Berkeley, CA, United States of America

Altex Scientific, Inc.

Forward Citations = 257

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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