Growing community of inventors

Greenville, SC, United States of America

Donald C Spann

Average Co-Inventor Count = 1.16

ph-index = 21

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 = 1,434

Donald C SpannDaniel J Schaefer (4 patents)Donald C SpannThomas A Krouskop (4 patents)Donald C SpannDorothy Sherry (1 patent)Donald C SpannDonald C Spann (23 patents)Daniel J SchaeferDaniel J Schaefer (19 patents)Thomas A KrouskopThomas A Krouskop (12 patents)Dorothy SherryDorothy Sherry (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Other (13 from 832,718 patents)

2. Span-america Medical Systems, Inc. (9 from 70 patents)


23 patents:

1. 5580504 - Method of making a mattress overlay

2. 5252278 - Method of making a mattress overlay

3. 5025519 - Multi-section mattress overlay for systematized pressure dispersion

4. 4862538 - Multi-section mattress overlay for systematized pressure dispersion

5. 4700447 - Support pad and method of manufacture

6. 4603445 - Support pad and method of manufacture

7. 4573456 - Foam body support

8. 4482138 - Body positioner

9. 4471952 - Surgical body positioner and disposable topper

10. 4433678 - Disposable orthopedic support

11. 4418514 - Orthopedic support package and method

12. D269917 - Houshold cleaning mop

13. 4327714 - Disposable orthopedic support

14. 4233700 - Ventilated body positioner

15. 4214326 - Body positioner and protection apparatus

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idiyas.com
as of
12/14/2025
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