Growing community of inventors

Portland, OR, United States of America

Richard O Hartmann

Average Co-Inventor Count = 1.33

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 = 97

Richard O HartmannA Ray Shirley, Jr (3 patents)Richard O HartmannTimothy Gene Holt (2 patents)Richard O HartmannRichard J Camarota (1 patent)Richard O HartmannGary Alsobrook (1 patent)Richard O HartmannRichard O Hartmann (10 patents)A Ray Shirley, JrA Ray Shirley, Jr (4 patents)Timothy Gene HoltTimothy Gene Holt (23 patents)Richard J CamarotaRichard J Camarota (34 patents)Gary AlsobrookGary Alsobrook (3 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (5 from 832,812 patents)

2. Bi-en Corp (4 from 4 patents)


10 patents:

1. 11407689 - Black urea enhanced efficiency controllable release fertilizer compositions

2. 10737987 - Fluid ionized compositions, methods of preparation and uses thereof

3. 10189751 - Fluid ionized compositions, methods of preparation and uses thereof

4. 9359263 - Fluid ionized compositions, methods of preparation and uses thereof

5. 7785388 - Method for producing stabilized nitrogen compositions

6. 6576035 - Stabilized enhanced efficiency controllable release calcium cyanamide compositions

7. D442561 - Electric power director panel

8. 5976212 - Method and packaging utilizing calcium cyanamide for soil treatment

9. 5698004 - Method and packaging utilizing calcium cyanamide for soil treatment

10. 4870710 - Body-liquid collecting and mattress protecting apparatus

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12/20/2025
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