Lummus Corporation
188Patents
13Active
188Granted
43Portfolio score
Filing activity: Oct 21, 1968 → Nov 19, 2019 · 8 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4411768A | Hydrogenation of high boiling hydrocarbons | Mechanical Engineering; Lighting; Heating | 74 | Expired |
| US4273621A | Process for dehydrating ethanol and for the production of gasohol therefrom | Emerging Cross-Sectional Technologies | 43 | Expired |
| US3983711A | Plural stage distillation of a natural gas stream | Emerging Cross-Sectional Technologies | 42 | Expired |
| US4181601A | Feed hydrotreating for improved thermal cracking | Chemistry; Metallurgy | 42 | Expired |
| US4415460A | Oxidation of organics in aqueous salt solutions | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4041721A | Vessel having natural gas liquefaction capabilities | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US4004430A | Process and apparatus for treating natural gas | Mechanical Engineering; Lighting; Heating | 36 | Expired |
| US4496752A | Production of epoxy compounds from olefinic compounds | Chemistry; Metallurgy | 35 | Expired |
| US4134926A | Production of ethylene from ethanol | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4410714A | Production of epoxy compounds from olefinic compounds | Chemistry; Metallurgy | 31 | Expired |
| US4443620A | Production of epoxy compounds from olefinic compounds | Chemistry; Metallurgy | 29 | Expired |
| US4129604A | Reactor effluent quench system | Chemistry; Metallurgy | 28 | Expired |
| US4343691A | Heat and water recovery from aqueous waste streams | Chemistry; Metallurgy | 27 | Expired |
| US4240885A | Oxidation of organics in aqueous salt solutions | Chemistry; Metallurgy | 27 | Expired |
| US4342642A | Steam pyrolysis of hydrocarbons | Chemistry; Metallurgy | 23 | Expired |
| US4423022A | Processes for carrying out catalytic exothermic and endothermic high-pressure gas reactions | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4008133A | Production of epoxy compounds from olefinic compounds | Chemistry; Metallurgy | 23 | Expired |
| US5546855A | Automatic bale tying apparatus | Performing Operations; Transporting | 22 | Expired |
| US4012212A | Process and apparatus for liquefying natural gas | Mechanical Engineering; Lighting; Heating | 21 | Expired |
| US4017276A | Deoxygenation of water | Chemistry; Metallurgy | 19 | Expired |
| US4341737A | Apparatus for carrying out catalytic exothermic and endothermic high-pressure gas reactions | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4108798A | Process for the production of petroleum coke | Chemistry; Metallurgy | 18 | Expired |
| US4216074A | Dual delayed coking of coal liquefaction product | Chemistry; Metallurgy | 18 | Expired |
| US4126526A | Cyclic process for production of alkylene oxide using electrolysis of brine | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4028221A | Liquefaction of sub-bituminous and lignitic coal | Chemistry; Metallurgy | 18 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.