P

Inventor

HAY ROBERT A

US7 patents
⚠️ This page may combine multiple inventors who share the name “HAY ROBERT A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NORTON CO

3 patents
US4968426ANov 6, 1990

Fine alpha alumina ultrafiltration membranes

NORTON CO25 citations91
US4678762AJul 7, 1987

Very smooth and flat polycrystalline alumina substrates from direct firing

NORTON CO22 citations81
US5004544AApr 2, 1991

Reaction bonded silicon nitride filtration membranes

NORTON CO13 citations72

CERAMICS PROCESS SYSTEMS

2 patents
US6884522B2Apr 26, 2005

Metal matrix composite structure and method

CERAMICS PROCESS SYSTEMS37 citations90
US7141310B2Nov 28, 2006

Metal matrix composite structure and method

CERAMICS PROCESS SYSTEMS18 citations79

SAINT GOBAIN NORTON IND CERAMI

1 patent
US5667344ASep 16, 1997

CVD diamond cutting tools with oriented crystal grain boundaries

SAINT GOBAIN NORTON IND CERAMI11 citations70

DOW CHEMICAL CO

1 patent
US4292019ASep 29, 1981

Extruded plastic foam shaping apparatus

DOW CHEMICAL CO18 citations68