David Woodruff
25Patents
13h-index
53Co-inventors
84Inventor score
Filing activity: Jun 9, 1989 → Aug 20, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5985368A | Coating composition for metal-based substrates, and related processes | Emerging Cross-Sectional Technologies | 47 | Expired |
| US6630568B1 | Method for purification of aromatic polyethers | Chemistry; Metallurgy | 36 | Expired |
| US5759932A | Coating composition for metal-based substrates, and related processes | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5169685A | Method for forming non-columnar deposits by chemical vapor deposition | Chemistry; Metallurgy | 26 | Expired |
| US6949622B2 | Method of separating a polymer from a solvent | Performing Operations; Transporting | 23 | Expired |
| US6790934B2 | Method for purification of aromatic polyethers | Chemistry; Metallurgy | 19 | Expired |
| US7115785B2 | Method for making salts hydroxy-substituted hydrocarbons | Chemistry; Metallurgy | 19 | Expired |
| US5148463A | Adherent focal track structures for X-ray target anodes having diffusion barrier film therein and method of preparation thereof | Electricity | 18 | Expired |
| US5397396A | Apparatus for chemical vapor deposition of diamond including thermal spreader | Chemistry; Metallurgy | 18 | Expired |
| US5204891A | Focal track structures for X-ray anodes and method of preparation thereof | Electricity | 15 | Expired |
| US5629970A | Emissivity enhanced x-ray target | Electricity | 14 | Expired |
| US5693742A | Solventless method for making polyarylene ethers | Chemistry; Metallurgy | 14 | Expired |
| US7125954B2 | Method for producing polyether polymers | Chemistry; Metallurgy | 13 | Expired |
| US7714095B2 | Phase transfer catalyzed method for preparation of polyetherimides | Chemistry; Metallurgy | 13 | Active |
| US4920012A | Articles having coatings of fine-grained and/or equiaxed grain structure | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7122619B2 | Method of separating a polymer from a solvent | Performing Operations; Transporting | 8 | Expired |
| US7902407B2 | Method for preparation of salts of hydroxy-substituted aromatic compounds | Chemistry; Metallurgy | 6 | Active |
| US8372941B2 | Method for purification of polyether polymers and mixtures resulting therefrom | Chemistry; Metallurgy | 6 | Active |
| US9181395B2 | Optimized emulsion drying process for making micronized polyetherimide polymers | Emerging Cross-Sectional Technologies | 5 | Active |
| US7772435B2 | Method of forming a dry quaternary ammonium salt mixture | Chemistry; Metallurgy | 4 | Active |
| US5372645A | Method for determining thickness of chemical vapor deposited layers | Chemistry; Metallurgy | 3 | Expired |
| US5300313A | Method for determining thickness of chemical vapor deposited layers | Chemistry; Metallurgy | 3 | Expired |
| US9567232B1 | Method for preparing sodium chloro-aluminate | Chemistry; Metallurgy | 1 | Active |
| US8592548B2 | Method to prepare bis(haloimides) | Chemistry; Metallurgy | 0 | Expired |
| US8729214B2 | Mixtures resulting from methods for purification of polyether polymers | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.