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Warminster, PA, United States of America

Fischer & Porter Company

USPTO Granted Patents = 165

Forward Citations = 2,705

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95 inventors (with patents filed for the assignee):

Peter J Herzl (45 out of 45 patents)

Roy F Schmoock (18 out of 18 patents)

Eggert Appel (11 out of 11 patents)

4. Peter Nissen (9 out of 11 patents)

5. Wilfried Kiene (9 out of 9 patents)

6. Masahiro Kazahaya (7 out of 7 patents)

7. Gottfried Geisler (6 out of 6 patents)

8. Daniel J Soltz (6 out of 7 patents)

9. James W Davis (5 out of 9 patents)

10. Elmer D Mannherz (5 out of 6 patents)

11. John S Yard (5 out of 5 patents)

12. Brian J Ratigan (4 out of 7 patents)

13. Warren O Strohmeier (4 out of 4 patents)

14. Dieter Meier (4 out of 4 patents)

15. Herbert A Shauger, Jr (4 out of 9 patents)

Core Competencies:

Flowmeter Measuring Tube

Coriolis-Type Mass Flowmeter

Electromagnetic Flowmeter

Ultrasonic Liquid Level Meter

Fluid Flowrate Measuring Apparatus

Packet Switching

Network Architecture

Differential-Pressure Transducer

Laser Welding Technique

Signal Recovery System

Capacitance-Type Electrode Assemblies

Hybrid Sensing System

165 patents: Sort by Forward Citations

1. 5520221 - Flowmeter measuring tube (1996-05-28),

2. 5403533 - Process for lining a tube (1995-04-04),

3. 5375475 - Device to measure the flowrate in a partially full line (1994-12-27),

4. 5370000 - Magnetic flowmeter with fault detection (1994-12-06),

5. 5327787 - Electromagnetic flow meter with weir (1994-07-12),

6. 5301556 - Flow measuring apparatus (1994-04-12),

7. 5299461 - Fluid flowrate measuring apparatus (1994-04-05),

8. 5243596 - Network architecture suitable for multicasting and resource locking (1993-09-07),

9. 5235595 - Packet switching (1993-08-10),

10. 5187988 - Apparatus for measuring the flow of a fluid medium (1993-02-23),

11. 5019256 - Ultraviolet lamp rack assembly (1991-05-28),

12. 4972724 - Coriolis-type mass flowmeter having a straight measuring tube (1990-11-27),

13. 4957005 - Coriolis-type flowmeter (1990-09-18),

14. 4953409 - Noise and offset voltage-compensated electromagnetic flowmeter (1990-09-04),

15. 4953408 - Capacitive type electromagnetic flowmeter (1990-09-04),

Fischer & Porter Company is a leading manufacturer and distributor of high-quality industrial instrumentation and control systems. With over 75 years of experience, we have established ourselves as a trusted provider of innovative solutions for various industries, including oil and gas, chemical processing, and water treatment. Our diverse product range includes flow meters, level transmitters, pressure sensors, and more. We are committed to delivering reliable and accurate measuring instruments that enhance productivity and efficiency for our customers.

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Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

165 Patents

#1 in Warminster, PA

#99 in Pennsylvania

#2,330 in US

#4,865 in the World

Warminster, PA, United States of America

Fischer & Porter Company

Forward Citations = 2,705

95 inventors:

Peter J Herzl (45 out of 45 patents)

Roy F Schmoock (18 out of 18 patents)

Eggert Appel (11 out of 11 patents)

4. Peter Nissen (9 out of 11 patents)

5. Wilfried Kiene (9 out of 9 patents)

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