Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Howmet Research › Robert E. Grunstra
RG

Robert E. Grunstra — 6 Patents

HRHowmet Research: 3 patents #17 of 117Top 15%
HCHowmet Turbine Components: 2 patents #6 of 19Top 35%
HOHowmet: 1 patents #52 of 110Top 50%
North Muskegon, MI: #7 of 44 inventorsTop 20%
Michigan: #15,817 of 86,293 inventorsTop 20%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Robert E. Grunstra has been granted 6 US patents while listed as an inventor at Howmet Research. The first was granted in 1986 and the most recent in October 2007. Robert E. Grunstra ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Robert E. Grunstra in North Muskegon, MI, US.

Patents per Year

Patents granted per year, 1986 to 2007Bar chart with a peak of 2 patents in 1986.peak 21986: 2 patents19861998: 1 patents19982006: 1 patents20062007: 2 patents2007

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
7278460 Ceramic casting core and method John Corrigan 2007-10-09
7234506 Ceramic casting core and method John Corrigan 2007-06-26
7093645 Ceramic casting core and method John Corrigan 2006-08-22
5706881 Heat treatment of superalloy casting with partial mold removal Julie A. Faison, Jacqueline B. Wahl 1998-01-13
4612969 Method of and apparatus for casting articles with predetermined crystalline orientation Lamar Burd, Evan R. Miller, Eugene J. Carozza 1986-09-23
4580613 Method and mold for casting articles having a predetermined crystalline orientation Evan R. Miller, Lamar Burd, Eugene J. Carozza 1986-04-08

Frequent Collaborators

John Corrigan3 shared
Eugene J. Carozza2 shared
Lamar Burd2 shared
Evan R. Miller2 shared
Julie A. Faison1 shared
Jacqueline B. Wahl1 shared

Nearby-Ranked Inventors

Aurélien Joulia6
Michael F. Vollero6
Stefano Fracassi6
Uwe Gruenbeck6
Alexander Matrosov6
Rouzbeh Behnia6
Carole Chapelat6
Mina Sedaghat6
Martinus Johannes Donatus Brakkee6