John A. Hyatt
27Patents
7h-index
27Co-inventors
69Inventor score
Filing activity: Jul 14, 1976 → Dec 4, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5104450A | Formulations of cellulose esters with arylene-bis(diaryl phosphate)s | Chemistry; Metallurgy | 75 | Expired |
| US6242227A | Method of vitamin production | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6057438A | Process for the co-production of dissolving-grade pulp and xylan | Textiles; Paper | 30 | Expired |
| US4386221A | Process for the preparation of aryl alkyl sulfones and aryl vinyl sulfones | Chemistry; Metallurgy | 23 | Expired |
| US4803255A | Lignin and lignin derivatives as copolymerizable colorants for polyesters | Chemistry; Metallurgy | 20 | Expired |
| US6156913A | Method of producing vitamin E | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4771101A | Unsaturated polyesters colored with lignin | Chemistry; Metallurgy | 10 | Expired |
| US5502137A | Polyether glycols and alcohols derived from 3,4-epoxy-1-butene, tetrahydrofuran and an initiator | Chemistry; Metallurgy | 6 | Expired |
| US5670668A | Crystalline tocotrienol esters | Chemistry; Metallurgy | 5 | Expired |
| US4328162A | Process for preparing 9,11-unsaturated steroidal compound from the corresponding saturated steroidal compound | Chemistry; Metallurgy | 5 | Expired |
| US4499272A | NH.sub.4.sup.+ Or group IA metal 2,7-dimethyl-1,2,3-tetrahydro-.beta.-hydroxy-1-quinolinepropanesulfonate s | Chemistry; Metallurgy | 3 | Expired |
| US6262279A | Preparation of tocopherols | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5294703A | Process for preparing .alpha.-D-cellobiose octaacetate | Chemistry; Metallurgy | 3 | Expired |
| US5869704A | Water-dispersible or water-soluble D-tocotrienol compounds and methods for making therefor | Chemistry; Metallurgy | 2 | Expired |
| US5360723A | Method for lowering molecular weight of microbial celluloses | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4018832A | Novel complexing agents derived from cyclotriveratrylene | Performing Operations; Transporting | 2 | Expired |
| US5536809A | Polyether glycols and alcohols derived form 3,4-epoxy-1-butene, tetrahydrofuran and an initiator | Chemistry; Metallurgy | 2 | Expired |
| US6191300A | Process for the preparation of cyclopropylacetonitrile | Chemistry; Metallurgy | 2 | Expired |
| US4374770A | Process for preparation of aromatic acid chlorides | Chemistry; Metallurgy | 1 | Expired |
| US4772747A | Preparation of 2,4,6-trichlorophenylhydrazine | Chemistry; Metallurgy | 1 | Expired |
| US5929298A | Process for preparing conjugated dienes using substituted rhenium trioxide | Chemistry; Metallurgy | 0 | Expired |
| US7696363B2 | Preparation of flavonoid compounds | Chemistry; Metallurgy | 0 | Active |
| US4621146A | Alkylthioalkyl lactones | Chemistry; Metallurgy | 0 | Expired |
| US6538085B2 | Copolymerization of norbornene and functional norbornene monomers | Chemistry; Metallurgy | 0 | Expired |
| US6350837B1 | Copolymerization of norbornene and functional norbornene monomers | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.