For the Inventor, By the Inventor

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New Holland, PA, United States of America

Sperry Rand Corporation

USPTO Granted Patents = 628

Trademarks = 7

Forward Citations = 8,962

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582 inventors (with patents filed for the assignee):

Edward W Rowland-Hill (17 out of 18 patents)

Donald H McMahon (15 out of 46 patents)

Ernest J Torok (14 out of 23 patents)

4. Willis R Campbell (12 out of 54 patents)

5. Aquila D Mast (11 out of 23 patents)

6. Robert R Todd (10 out of 20 patents)

7. Hugh B Matthews (10 out of 17 patents)

8. Gerald F Ross (8 out of 27 patents)

9. David S Lo (8 out of 21 patents)

10. Joe E Shriver (7 out of 14 patents)

11. L Dennis Butler (7 out of 17 patents)

12. Charles E Mendenhall (7 out of 8 patents)

13. Shaun A Seymour (6 out of 44 patents)

14. James H Scheuneman (6 out of 26 patents)

15. Edward Szymansky (6 out of 12 patents)

Core Competencies:

Buffer Memory

Error Detection

Signal Equalization

Floating Point Processor

Magnetic Recording

Tachometer

Data Communication

Agricultural Machinery

Phase Comparator

Voltage Regulation

Optical Modulator

Error Correction

628 patents: Sort by Forward Citations

1. 4334287 - Buffer memory arrangement (1982-06-08),

2. 4326291 - Error detection system (1982-04-20),

3. 4300017 - Shielded ribbon cable (1981-11-10),

4. 4295192 - Row address memory map overlap (1981-10-13),

5. 4282582 - Floating point processor architecture which performs subtraction with (1981-08-04),

6. 4276607 - Multiplier circuit which detects and skips over trailing zeros (1981-06-30),

7. 4268905 - Autonomous fault diagnosis for disk drive using an internal (1981-05-19),

8. 4266204 - Delay line signal equalizer for magnetic recording signal detection (1981-05-05),

9. 4263627 - Electronic tachometer (1981-04-21),

10. 4253182 - Optimization of error detection and correction circuit (1981-02-24),

11. 4248248 - Interrupted infeed flight means for combine rotor (1981-02-03),

12. 4246549 - Magneto-optical phase-modulating devices (1981-01-20),

13. 4237535 - Apparatus and method for receiving and servicing request signals from (1980-12-02),

14. 4236197 - Voltage regulation loop for inverter power supply (1980-11-25),

15. 4234934 - Apparatus for scaling memory addresses (1980-11-18),

Sperry Rand Corporation is a multinational corporation that specializes in electronics, electrical equipment, and commercial services. With a legacy dating back to the early 1900s, Sperry Rand has consistently provided innovative solutions for various industries, including aerospace, defense, and automation. Their commitment to excellence and cutting-edge technology has earned them a reputable position in the global market.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

628 Patents

#3 in New Holland, PA

#32 in Pennsylvania

#792 in US

#1,571 in the World

New Holland, PA, United States of America

Sperry Rand Corporation

Forward Citations = 8,962

582 inventors:

Edward W Rowland-Hill (17 out of 18 patents)

Donald H McMahon (15 out of 46 patents)

Ernest J Torok (14 out of 23 patents)

4. Willis R Campbell (12 out of 54 patents)

5. Aquila D Mast (11 out of 23 patents)

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