Harold W. Mark
34Patents
8h-index
20Co-inventors
71Inventor score
Filing activity: Jul 25, 1978 → Jul 12, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4554108A | Alkali carboxyalkyl dithiocarbamates and use as ore flotation reagents | Performing Operations; Transporting | 17 | Expired |
| US4721813A | Method for the oxidation of mercaptoalkanols to dithiodiglycols | Chemistry; Metallurgy | 17 | Expired |
| US4559153A | Metal working lubricant | Chemistry; Metallurgy | 17 | Expired |
| US4190552A | Passivation of metals on cracking catalysts with an antimony tris (hydrocarbyl sulfide) | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4198317A | Passivation of metals which contaminate cracking catalysts with antimony tris (hydrocarbyl sulfonate) | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4514293A | Ore flotation and flotation agents for use therein | Performing Operations; Transporting | 11 | Expired |
| US4290919A | Cracking catalysts passivated by tungsten | Chemistry; Metallurgy | 10 | Expired |
| US4595538A | Tri-alkali metal-di(carboxyalkyl)dithiocarbamate and triammonium-di(carboxyalkyl)dithiocarbamate flotation agents | Performing Operations; Transporting | 9 | Expired |
| US4495200A | Process for the control of sulfate-reducing bacteria | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4209453A | Antimony tris(dihydrocarbyl phosphite) and preparation thereof | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4533467A | Ore flotation and flotation agents for use therein | Performing Operations; Transporting | 7 | Expired |
| US4263130A | Process for cracking hydrocarbons with a catalyst passivated with an antimony tris (hydrocarbyl sulfide) | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4326990A | Passivating agent composition and method for its preparation | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4857179A | Ore flotation and mineral flotation agents for use therein | Performing Operations; Transporting | 6 | Expired |
| US4702821A | Ore flotation and di-alkali metal-di(carboxyalkyl)dithiocarbamate and diammonium-di(carboxyalkyl)dithiocarbamate flotation agents for use therein | Performing Operations; Transporting | 6 | Expired |
| USRE37789E1 | Regenerating zeolitic cracking catalyst | General | 5 | Expired |
| US4554068A | Ore flotation and flotation agents for use therein | Performing Operations; Transporting | 5 | Expired |
| US4535066A | Passivating metals on cracking catalysts | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4263131A | Passivation of metals contaminating a cracking catalyst with an antimony tris(dihydrocarbyl phosphite) catalyst and process of cracking therewith | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4459366A | Passivating metals on cracking catalysts | Performing Operations; Transporting | 3 | Expired |
| US4264434A | Passivation of metals which contaminate cracking catalysts with antimony tris (hydrocarbyl sulfonate) | Performing Operations; Transporting | 3 | Expired |
| US4251673A | Rapid hydrolysis of esters | Chemistry; Metallurgy | 3 | Expired |
| US4806234A | Ore flotation | Performing Operations; Transporting | 3 | Expired |
| US4394324A | Stable antimony organophosphorodithioates | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4650568A | Trithiocarbonates as depressants in ore flotation | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.