Growing community of inventors

Wilmington, OH, United States of America

Ronald D Vance

Average Co-Inventor Count = 2.00

ph-index = 6

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 = 175

Ronald D VanceElroy Edwin Bourgraf (3 patents)Ronald D VanceEugene VanDyne (2 patents)Ronald D VanceRobert E Dunn (1 patent)Ronald D VanceKenneth R Berta (1 patent)Ronald D VanceH Clayton Johnson (1 patent)Ronald D VanceRonald D Vance (6 patents)Elroy Edwin BourgrafElroy Edwin Bourgraf (14 patents)Eugene VanDyneEugene VanDyne (3 patents)Robert E DunnRobert E Dunn (6 patents)Kenneth R BertaKenneth R Berta (3 patents)H Clayton JohnsonH Clayton Johnson (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Ferno-washington, Inc. (5 from 151 patents)

2. Other (1 from 832,812 patents)


6 patents:

1. 6681424 - Tilt-top mortuary cot

2. 6381781 - Combination ambulance cot and chair

3. 5839136 - Cot mountable arm rest and cot incorporating same

4. 5432966 - Adjustable ambulance cot with trolley mechanism

5. 4688279 - Combination stretcher and stairchair

6. 4369985 - One man cart for articles

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as of
12/17/2025
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