Inventor

SMITH FRANK A

3 patents

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

UNITED STATES STEEL CORP

2 patents

US4107382AAug 15, 1978

Coated pitch prill

UNITED STATES STEEL CORP8 citations68

US4082823AApr 4, 1978

Process for forming coated pitch prills

UNITED STATES STEEL CORP15 citations68

REDLAND ROOF TILES LTD

1 patent

US4695418ASep 22, 1987

Method and apparatus for manufacturing roof tiles and tiles made thereby

REDLAND ROOF TILES LTD30 citations86