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Ronald J. Petrus
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Lake Orion, MI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Piston for use in internal combustion engines and method of making...
Patent number
11,994,085
Issue date
May 28, 2024
GM Global Technology Operations LLC
Ronald John Petrus
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Cylinder block casting slab core cast geometry for sawcut entrance...
Patent number
11,655,776
Issue date
May 23, 2023
GM Global Technology Operations LLC
Ronald John Petrus
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Hybrid cam bore sand core with metal chills for cast aluminum block
Patent number
11,554,413
Issue date
Jan 17, 2023
GM Global Technology Operations LLC
Ronald J. Petrus
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method to attach copper alloy valve inserts to aluminum cylinder head
Patent number
11,530,629
Issue date
Dec 20, 2022
GM Global Technology Operations LLC
Huaxin Li
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
PISTON FOR USE IN INTERNAL COMBUSTION ENGINES AND METHOD OF MAKING...
Publication number
20230417203
Publication date
Dec 28, 2023
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Ronald John Petrus
B22 - CASTING POWDER METALLURGY
Information
Patent Application
HYBRID CAM BORE SAND CORE WITH METAL CHILLS FOR CAST ALUMINUM BLOCK
Publication number
20220241851
Publication date
Aug 4, 2022
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Ronald J. Petrus
B22 - CASTING POWDER METALLURGY
Information
Patent Application
METHOD TO ATTACH COPPER ALLOY VALVE INSERTS TO ALUMINUM CYLINDER HEAD
Publication number
20210404353
Publication date
Dec 30, 2021
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Huaxin Li
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information
Patent Application
ALUMINUM CYLINDER BLOCK ASSEMBLIES AND METHODS OF MAKING THE SAME
Publication number
20190085786
Publication date
Mar 21, 2019
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Ronald J. Petrus
B22 - CASTING POWDER METALLURGY
Information
Patent Application
PISTON RING AND MANUFACTURING METHOD
Publication number
20180023703
Publication date
Jan 25, 2018
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Ronald J. PETRUS
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
TiO2 APPLICATION AS BONDCOAT FOR CYLINDER BORE THERMAL SPRAY
Publication number
20160356242
Publication date
Dec 8, 2016
GM GLOBAL TECHNOLOGY OPERATIONS LLC
Ronald J. Petrus
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR