Halcon Research and Development Corp.
53Patents
0Active
53Granted
34Portfolio score
Filing activity: Jun 6, 1977 → May 28, 1981
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4263448A | Process for oxidation of hydrocarbons | Chemistry; Metallurgy | 51 | Expired |
| US4151116A | Preparation of maleic anhydride | Chemistry; Metallurgy | 49 | Expired |
| US4134797A | Process for recovery of ethylene oxide containing low levels of aldehydic impurities | Emerging Cross-Sectional Technologies | 31 | Expired |
| US4140588A | Purification of propylene oxide by extractive distillation | Performing Operations; Transporting | 27 | Expired |
| US4252741A | Carbonylation with Group VIII noble metal catalysts | Chemistry; Metallurgy | 21 | Expired |
| US4207424A | Catalytic process for dehydration of alcohols | Chemistry; Metallurgy | 20 | Expired |
| US4245114A | Glycol ester preparation | Chemistry; Metallurgy | 20 | Expired |
| US4271040A | Catalyst and process for producing methacrylic acid | Performing Operations; Transporting | 20 | Expired |
| US4244878A | Preparation of maleic anhydride | Chemistry; Metallurgy | 13 | Expired |
| US4234719A | Preparation of cellulose acetate | Chemistry; Metallurgy | 11 | Expired |
| US4147721A | Process for recovering methacrylic acid | Emerging Cross-Sectional Technologies | 11 | Expired |
| USRE30545E | Catalyst | General | 10 | Expired |
| US4238551A | Composition for inhibiting corrosion of titanium | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4261858A | Catalyst for producing methacrylic acid | Performing Operations; Transporting | 10 | Expired |
| US4241219A | Treatment of carbonylation effluent | Chemistry; Metallurgy | 10 | Expired |
| US4335059A | Preparation of carboxylic acid anhydrides | Performing Operations; Transporting | 10 | Expired |
| US4260781A | Process for the manufacture of carbamates | Chemistry; Metallurgy | 10 | Expired |
| US4252683A | Catalyst for producing methacrylic acid | Performing Operations; Transporting | 9 | Expired |
| US4260821A | Minimizing polymerization during recovery of methacrylic acid | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4251458A | Process for preparing carboxylic acid anhydrides | Chemistry; Metallurgy | 8 | Expired |
| US4234718A | Process for preparing cellulose acetate | Chemistry; Metallurgy | 8 | Expired |
| US4252748A | Recovery of acetone produced by carbonylation | Chemistry; Metallurgy | 8 | Expired |
| US4266070A | Catalytic process for the manufacture of urethanes | Chemistry; Metallurgy | 7 | Expired |
| US4246195A | Purification of carbonylation products | Chemistry; Metallurgy | 7 | Expired |
| US4234519A | Recovery of methacrolein | Chemistry; Metallurgy | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.