Growing community of inventors

Culver City, CA, United States of America

Robert John Roca

Average Co-Inventor Count = 1.33

ph-index = 4

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 = 30

Robert John RocaRonald D Cranford (2 patents)Robert John RocaRobert John Roca (4 patents)Ronald D CranfordRonald D Cranford (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (2 from 832,891 patents)

2. Roca Productions, Inc. (2 from 2 patents)


4 patents:

1. 6776550 - Removable insert for a binder

2. 6702330 - Book with hidden spine

3. 5739744 - Electronically simulated rotary-type cardfile

4. 5452240 - Electronically simulated rotary-type cardfile

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