Inventor
ALLAN JOHN L H
16 patents
⚠️ This page may combine multiple inventors who share the name “ALLAN JOHN L H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DART IND INC
11 patentsUS4141850AFeb 27, 1979
Dissolution of metals
DART IND INC25 citations81
US4222779ASep 16, 1980
Non-chromate conversion coatings
DART IND INC27 citations78
US4158592AJun 19, 1979
Dissolution of metals utilizing a H2 O2 -sulfuric acid solution catalyzed with ketone compounds
DART IND INC8 citations72
US4158593AJun 19, 1979
Dissolution of metals utilizing a H2 O2 -sulfuric acid solution catalyzed with selenium compounds
DART IND INC14 citations72
US4140646AFeb 20, 1979
Dissolution of metals with a selenium catalyzed H2 O2 -H2 SO4 etchant containing t-butyl hydroperoxide
DART IND INC14 citations71
US4225350ASep 30, 1980
Non-chromate conversion coatings
DART IND INC9 citations70
US4225351ASep 30, 1980
Non-chromate conversion coatings
DART IND INC9 citations70
US4222895ASep 16, 1980
Polyolefin catalyst
DART IND INC2 citations62
US4382018AMay 3, 1983
Method for making titanium trichloride catalysts
DART IND INC4 citations60
US4197387AApr 8, 1980
Polyolefin catalyst
DART IND INC0 citations51
US4154702AMay 15, 1979
Polyolefin catalyst
DART IND INC1 citations51