Growing community of inventors

Royal Oak, MI, United States of America

David J Harrell

Average Co-Inventor Count = 1.33

ph-index = 9

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 = 231

David J HarrellKenneth J Kwasnik (5 patents)David J HarrellDavid J Harrell (10 patents)Kenneth J KwasnikKenneth J Kwasnik (6 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Lear Seating Corporation (10 from 42 patents)


10 patents:

1. 5292171 - Vehicle seat armrest bracket and cover assembly

2. 5238295 - Tilt-adjustable head rest having ratcheting mechanism

3. 5236246 - Adjustable headrest having integral pivot connection

4. 5236245 - Tilt-adjustable headrest having central ratcheting mechanism

5. 5228749 - Pivoting headrest having snap-together body sections

6. 5131716 - Vehicle cupholder with locking mechanism

7. 5121963 - Retainer ring

8. 5116099 - Mechanical latch locking a cover of pivoting armrest assembly

9. 5104186 - Storage armrest and drink holder with movable cup support

10. 5104184 - Storage armrest with drink holder arrangement

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as of
1/20/2026
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