Inventor
ROBERTS BETTY C
US4 patents
⚠️ This page may combine multiple inventors who share the name “ROBERTS BETTY C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BUILDING MATERIALS INVEST CORP
3 patentsUS7928023B2Apr 19, 2011
Composite sheet material and process of making
BUILDING MATERIALS INVEST CORP21 citations91
US6851240B2Feb 8, 2005
Shingle tear strength with fiber mixture of different fibers
BUILDING MATERIALS INVEST CORP30 citations89
US6737369B2May 18, 2004
Cured non-woven mat of a mixture of fibers
BUILDING MATERIALS INVEST CORP22 citations89