Inventor

RENFREE RICHARD

US4 patents

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

POLYWOOD INC

2 patents

US6191228B1Feb 20, 2001

Use of recycled plastics for preparing high performance composite railroad ties

POLYWOOD INC83 citations94

US7011253B2Mar 14, 2006

Engineered railroad ties

POLYWOOD INC11 citations80

UNIV RUTGERS

2 patents

US7996945B2Aug 16, 2011

Use of recycled plastics for structural building forms

UNIV RUTGERS24 citations90

US7795329B2Sep 14, 2010

Use of recycled plastics for structural building forms

UNIV RUTGERS10 citations82