For the Inventor, By the Inventor

Enter assignee name

North Wales, PA, United States of America

Leeds & Northrup Company

USPTO Granted Patents = 73

Trademarks = 6

Forward Citations = 1,487

Loading Chart...

Loading Chart...

64 inventors (with patents filed for the assignee):

Charles W Ross (7 out of 10 patents)

Paul J Freud (5 out of 17 patents)

Thomas J Walsh (5 out of 9 patents)

4. James G Connery (5 out of 10 patents)

5. Ronald D Baxter (4 out of 11 patents)

6. Howard S Hoopes (4 out of 6 patents)

7. Alan L Wertheimer (4 out of 4 patents)

8. Richard J Hance (4 out of 4 patents)

9. Giancarlo Punis (3 out of 7 patents)

10. Edgar L Eckfeldt (3 out of 3 patents)

11. Theron W Jenkins, Jr (3 out of 3 patents)

12. Peter J Clack (3 out of 3 patents)

13. Robert W McClenahan (3 out of 3 patents)

14. James J Hitt (3 out of 5 patents)

15. Louis D DiNapoli (3 out of 3 patents)

Core Competencies:

Temperature Sensors

Humidity Sensing

Data Communication Bus

P-I-D Controller

Pressure Transducer

Optical Pyrometer

Flowmeter Transducer

Boiler Control Systems

Analog to Digital Converter

Doppler Flowmeter

Thermocouple

Flame Monitoring

73 patents: Sort by Forward Citations

1. 4545029 - Remote correlation of sequence of events (1985-10-01),

2. 4492948 - Fast response surface contact temperature sensor (1985-01-08),

3. 4473889 - Remote correlation of sequence of events (1984-09-25),

4. 4469717 - Thin film resistance thermometer with a predetermined temperature (1984-09-04),

5. 4429343 - Humidity sensing element (1984-01-31),

6. 4419733 - Time deviation and inadvertent interchange correction for automatic (1983-12-06),

7. 4417303 - Multi-processor data communication bus structure (1983-11-22),

8. 4407013 - Self tuning of P-I-D controller by conversion of discrete time model (1983-09-27),

9. 4390925 - Multiple-cavity variable capacitance pressure transducer (1983-06-28),

10. 4390796 - Voltage to duty cycle converter (1983-06-28),

11. 4389674 - Preamplifier for low voltage signals in the presence of high voltage (1983-06-21),

12. 4385362 - Filter arrangement for elimination of unwanted bias in a model reference (1983-05-24),

13. 4375663 - Power failure early warning circuit for microprocessor with CMOS RAM (1983-03-01),

14. 4375333 - Microprocessor directed optical pyrometer (1983-03-01),

15. 4375056 - Thin film resistance thermometer device with a predetermined temperature (1983-02-22),

Leeds & Northrup Company is a renowned global provider of measurement and control instruments for industrial and scientific applications. With over 100 years of experience, the company offers a wide range of innovative solutions for the accurate measurement and efficient control of various processes. Their product portfolio includes instrumentation for temperature, pressure, level, pH, conductivity, and more. Leeds & Northrup has established itself as a trusted partner for industries such as chemical, petrochemical, power, pharmaceutical, and research institutions worldwide.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

73 Patents

#2 in North Wales, PA

#184 in Pennsylvania

#4,810 in US

#9,809 in the World

North Wales, PA, United States of America

Leeds & Northrup Company

Forward Citations = 1,487

64 inventors:

Charles W Ross (7 out of 10 patents)

Paul J Freud (5 out of 17 patents)

Thomas J Walsh (5 out of 9 patents)

4. James G Connery (5 out of 10 patents)

5. Ronald D Baxter (4 out of 11 patents)

Please report any incorrect information to support@idiyas.com

Loading…