Heikki Heikkila
75Patents
26h-index
76Co-inventors
91Inventor score
Filing activity: Mar 15, 1976 → Oct 28, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7109005B2 | Process for the simultaneous production of xylitol and ethanol | Emerging Cross-Sectional Technologies | 77 | Expired |
| US5084104A | Method for recovering xylose | Chemistry; Metallurgy | 57 | Expired |
| US5730877A | Method for fractionating a solution | Performing Operations; Transporting | 57 | Expired |
| US4631129A | Production of pure sugars and lignosulfonates from sulfite spent liquor | Performing Operations; Transporting | 55 | Expired |
| US6224776A | Method for fractionating a solution | Performing Operations; Transporting | 52 | Expired |
| US5081026A | Method for the production of xylitol | Emerging Cross-Sectional Technologies | 52 | Expired |
| US6093326A | Method for the fractionation of molasses | Performing Operations; Transporting | 51 | Expired |
| US7008485B2 | Separation process | Chemistry; Metallurgy | 49 | Expired |
| US5637225A | Method for fractionating sulphite cooking liquor | Textiles; Paper | 49 | Expired |
| US5127957A | Method for the recovery of betaine from molasses | Chemistry; Metallurgy | 47 | Expired |
| US4359430A | Betaine recovery process | Performing Operations; Transporting | 47 | Expired |
| US6896811B2 | Chromatographic separation method | Performing Operations; Transporting | 43 | Expired |
| US6846657B2 | Process for the simultaneous production of xylitol and ethanol | Emerging Cross-Sectional Technologies | 39 | Expired |
| US6086681A | Method for recovery of xylose from solutions | Chemistry; Metallurgy | 36 | Expired |
| US6572775B2 | Method for fractionating a solution | Performing Operations; Transporting | 34 | Expired |
| US6872316B2 | Recovery of xylose | Chemistry; Metallurgy | 34 | Expired |
| US5932452A | Process for the production of xylose by hydrolysis of hemicellulose by immobilized enzymes | Chemistry; Metallurgy | 32 | Expired |
| US6239274A | Method of producing xylose | Chemistry; Metallurgy | 31 | Expired |
| US6875349B2 | Method for fractionating a solution | Performing Operations; Transporting | 31 | Expired |
| US4066711A | Method for recovering xylitol | Chemistry; Metallurgy | 31 | Expired |
| US6752902B2 | Preparation of chemical pulp and xylose, utilizing a direct acid hydrolysis on the pulp | Textiles; Paper | 31 | Expired |
| US7229558B2 | Chromatographic separation method | Performing Operations; Transporting | 30 | Expired |
| US7022239B2 | Method for fractionating liquid mixtures | Performing Operations; Transporting | 29 | Expired |
| US7361273B2 | Separation of sugars, sugar alcohols, carbohydrates and mixtures thereof | Performing Operations; Transporting | 29 | Expired |
| US7959811B2 | Separation process | Chemistry; Metallurgy | 28 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.