Growing community of inventors

High Point, NC, United States of America

D Stephen Hoffman

Average Co-Inventor Count = 1.86

ph-index = 19

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 801

D Stephen HoffmanMarcus Lindsay Murphy (35 patents)D Stephen HoffmanW Clark Rogers (5 patents)D Stephen HoffmanCharles F Lowe (3 patents)D Stephen HoffmanRobert Barron Duncan (1 patent)D Stephen HoffmanDouglas L Gasal (1 patent)D Stephen HoffmanJ Steven Helton (1 patent)D Stephen HoffmanMarcus L Murphy (1 patent)D Stephen HoffmanD Stephen Hoffman (48 patents)Marcus Lindsay MurphyMarcus Lindsay Murphy (62 patents)W Clark RogersW Clark Rogers (11 patents)Charles F LoweCharles F Lowe (3 patents)Robert Barron DuncanRobert Barron Duncan (9 patents)Douglas L GasalDouglas L Gasal (8 patents)J Steven HeltonJ Steven Helton (2 patents)Marcus L MurphyMarcus L Murphy (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ultra-mek, Inc. (47 from 72 patents)

2. American Leather (1 from 3 patents)

3. Helton, Inc. (1 from 2 patents)


48 patents:

1. 9642468 - Seating unit convertible to bed

2. 9603452 - Gliding-reclining seating unit with power actuators

3. 9603453 - Reclining chair with tilting action to provide heart-rest position

4. 9357850 - Seating unit convertible to bed

5. 9149121 - Gliding-reclining seating unit actuated by pushing on the arms

6. 9144319 - Seating unit convertible to bed

7. 8997273 - Seating unit convertible to bed

8. 8967718 - Rocking-reclining seating unit

9. 8911009 - Rocking-reclining seating unit

10. 8833845 - Reclining seating unit with high legs and T-shaped seat cushion

11. 8783764 - Power-assisted reclining lift chair with single power actuator

12. 8752890 - Reclining seating unit with extendable footrest

13. 8714638 - High leg reclining seating unit with extendable footrest

14. 8622467 - Reclining seating unit with tiltable headrest

15. 8616627 - Gliding-reclining seating unit

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as of
12/21/2025
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