Growing community of inventors

Los Angeles, CA, United States of America

Philip D Hettema

Average Co-Inventor Count = 3.36

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 = 442

Philip D HettemaWilliam D Mason (2 patents)Philip D HettemaNicholas H Drobnis (2 patents)Philip D HettemaCecil D Magpuri (2 patents)Philip D HettemaEdward S Newquist (2 patents)Philip D HettemaCraig R Hanna (2 patents)Philip D HettemaKevin Todd Parent (1 patent)Philip D HettemaGary Goddard (1 patent)Philip D HettemaJames H Hightower (1 patent)Philip D HettemaJohn R Murdy (1 patent)Philip D HettemaAidan J Bradley (1 patent)Philip D HettemaCraig Hanna (1 patent)Philip D HettemaJennifer K Sauer (1 patent)Philip D HettemaPhilip D Hettema (6 patents)William D MasonWilliam D Mason (9 patents)Nicholas H DrobnisNicholas H Drobnis (6 patents)Cecil D MagpuriCecil D Magpuri (6 patents)Edward S NewquistEdward S Newquist (3 patents)Craig R HannaCraig R Hanna (2 patents)Kevin Todd ParentKevin Todd Parent (11 patents)Gary GoddardGary Goddard (3 patents)James H HightowerJames H Hightower (3 patents)John R MurdyJohn R Murdy (1 patent)Aidan J BradleyAidan J Bradley (1 patent)Craig HannaCraig Hanna (1 patent)Jennifer K SauerJennifer K Sauer (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Universal City Studios, Inc. (4 from 505 patents)

2. Universal Studios LLC (2 from 20 patents)


6 patents:

1. 6254489 - Amusement attraction with man-made tornado

2. 6220171 - Amusement ride

3. 6220965 - Amusement system

4. 6095926 - Amusement ride vehicle

5. 6074307 - Set transformation effect

6. 6060847 - Interactive amusement ride

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as of
12/18/2025
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