Assignee
HELIO PREC PRODUCTS INC
US·3 granted patents·4 citations·filing 2004–2005
Top patents by PatentIndex Score
3 records- 0144US7198554B2Method of making valve guide having textured external surfaceHELIO PREC PRODUCTS INC·Filed 2004·Granted Apr 3, 2007·3 cites·2 claims
- 0241US7628870B2Heat treated valve guide and method of makingHELIO PREC PRODUCTS INC·Filed 2005·Granted Dec 8, 2009·1 cites·15 claims
- 0333US7897102B2Method of making valve guide by powder metallurgy processHELIO PREC PRODUCTS INC·Filed 2004·Granted Mar 1, 2011·0 cites·8 claims
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