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For the Inventor, By the Inventor

Bridgeport, CT, United States of America

Sperry Rand Corporation


USPTO Granted Patents = 628

Trademarks = 9

Forward Citations = 8,886

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582 inventors (with patents filed for the assignee):

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

silverMedal Donald H McMahon (15 out of 46 patents)

bronzeMedal 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 Arrangement
Error Detection System
Shielded Ribbon Cable
Floating Point Processor Architecture
Magneto-Optical Devices
Voltage Regulation Loop
Asynchronous Bidirectional Interface
Magnetic Recording Signal Equalization
Agricultural Machine Structure
Automatic Bale Ejection Drive
Performance Monitor Apparatus
Data Storage Servo System

628 patents:

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.

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USPTO Data Jan 1 1976 - Dec 30 2025

628 Patents

#1 in Bridgeport, CT

#17 in Connecticut

#764 in US

#1,529 in the World

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Bridgeport, CT, United States of America

Sperry Rand Corporation

Forward Citations = 8,886

582 inventors:

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

silverMedal Donald H McMahon (15 out of 46 patents)

bronzeMedal 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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