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San Antonio, TX, United States of America

John T O'Callaghan

Average Co-Inventor Count = 4.61

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 = 80

John T O'CallaghanChristopher T Boyle (6 patents)John T O'CallaghanAlexander G Sammons (6 patents)John T O'CallaghanScott K Taylor (6 patents)John T O'CallaghanDenes Marton (2 patents)John T O'CallaghanChristian V Elder (2 patents)John T O'CallaghanJohn T O'Callaghan (6 patents)Christopher T BoyleChristopher T Boyle (71 patents)Alexander G SammonsAlexander G Sammons (33 patents)Scott K TaylorScott K Taylor (20 patents)Denes MartonDenes Marton (38 patents)Christian V ElderChristian V Elder (37 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. H4 Engineering, Inc. (6 from 25 patents)


6 patents:

1. 9253376 - Portable video recording system with automatic camera orienting and velocity regulation of the orienting for recording high quality video of a freely moving subject

2. 9160899 - Feedback and manual remote control system and method for automatic video recording

3. D704762 - Mounting and positioning unit for electronic recording device

4. D703719 - Electronic communication device

5. 8704904 - Portable system for high quality video recording

6. D684210 - Camera mounting and positioning device

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as of
12/14/2025
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