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For the Inventor, By the Inventor

Berkeley, CA, United States of America

Altex Scientific, Inc.

Calculating rank
USPTO Granted Patents = 15

Trademarks = 1

Forward Citations = 262

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11 inventors (with patents filed for the assignee):

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

silverMedal Emery Major (3 out of 10 patents)

bronzeMedal 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:

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),
Company Overview
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 synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

15 Patents

#44 in Berkeley, CA

#5,037 in California

#21,085 in US

#39,991 in the World

Berkeley, CA (US)
Berkeley, CA, United States of America

Altex Scientific, Inc.

Forward Citations = 262

11 inventors:

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

silverMedal Emery Major (3 out of 10 patents)

bronzeMedal 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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Altex Scientific, Inc.. Retrieved from https://idiyas.com/company/altex-scientific

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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