Averill Park, NY, United States of America

Hugo S Ferguson

This inventor holds 16 USPTO granted patents. Top assignees: Duffers Scientific, Inc., Dynamic Systems Limited, Duffers Associates, Inc.. Active years: 1978-2004.

USPTO Granted Patents = 16

% Patents Active = 100.0

Average Co-Inventor Count = 1.1

ph-index = 9

Forward Citations = 179(Granted Patents)

Location History:

Troy, NY (US) (1978)
New York, NY (US) (1978)
Averill Park, NY (US) (1981 - 1994)
Tarpon Springs, FL (US) (2002)
Clearwater, FL (US) (2004)

Company Filing History:

8 out of 8

Duffers Scientific, Inc.

patents

3 out of 12

Dynamic Systems Limited

patents

2 out of 2

Duffers Associates, Inc.

5. 2 out of 834,453

Other

patents

Years Active: 1978-2004

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16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6742440 - Servo-controlled integral stop for use with a servo-controlled hydraulic piston (2004-06-01),

2. 6422090 - Apparatus for a thermodynamic material testing system that produces very large strains in crystalline metallic specimens and accompanying methods for use therein (2002-07-23),

3. 5315085 - Oven that exhibits both self-resistive and self-inductive heating (1994-05-24),

4. 5202542 - Test specimen/jaw assembly that exhibits both self-resistive and (1993-04-13),

5. 5199304 - Apparatus for optically measuring specimen deformation during material (1993-04-06),

6. 5195378 - Dynamic thermal-mechanical material testing system utilizing a balanced (1993-03-23),

7. 5092179 - Dynamic material testing system having independent control over specimen (1992-03-03),

8. 4830683 - Apparatus for forming variable strength materials through rapid (1989-05-16),

9. 4734555 - Method and apparatus for measuring and controlling indentation in (1988-03-29),

10. 4721906 - One step RMS system (1988-01-26),

11. 4631697 - Signal controlled waveform recorder (1986-12-23),

12. 4509000 - Bumpless feedback switching apparatus for use in a servo system (1985-04-02),

13. 4328661 - Cross flow rotary mower having an axial expansion section (1982-05-11),

14. 4257214 - Cross flow rotary mower (1981-03-24),

15. 4127980 - Crossflow mower with automatic brake/sharpener (1978-12-05),

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Profile summary based on public USPTO records.

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3 patents pending (CIPO):

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