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Hopkinton, MA, United States of America

Philip C Lewellen

USPTO Granted Patents = 4

Average Co-Inventor Count = 2.0

ph-index = 3

Forward Citations = 32(Granted Patents)

Location History:

Houston, TX (US) (1987 - 1997)
Hopkinton, MA (US) (1997)

Company Filing History:

Shell Oil Comapny

Years Active: 1987-1997

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4 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5658503 - Dual phase distribution device (1997-08-19),

2. 5632865 - Method for introduction of aggressive liquid additives (1997-05-27),

3. 4659230 - Mixing element for compounds and extruding machinery (1987-04-21),

4. 4657499 - Screw extruder apparatus adapted for mixing additive fluids (1987-04-14),

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