James D. Birchall
35Patents
13h-index
23Co-inventors
81Inventor score
Filing activity: Dec 10, 1971 → Nov 6, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4410366A | Cement composition and product | Chemistry; Metallurgy | 76 | Expired |
| US4159913A | Siliceous materials | Emerging Cross-Sectional Technologies | 64 | Expired |
| US4353748A | Cementitious product | Chemistry; Metallurgy | 61 | Expired |
| US3992498A | Refractory fiber preparation with use of high humidity atmosphere | Chemistry; Metallurgy | 40 | Expired |
| US4363667A | Cementitious composition and cement produced therefrom | Chemistry; Metallurgy | 31 | Expired |
| US4353746A | Hydraulic cement composition | Chemistry; Metallurgy | 31 | Expired |
| US4015050A | Plastics film with an aluminium phosphate coating | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4320074A | Process for preparing shaped body of alumina | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4677082A | Composition comprising ceramic particles | Chemistry; Metallurgy | 21 | Expired |
| US5017525A | Production of ceramic materials and of precursor therefor | Chemistry; Metallurgy | 17 | Expired |
| US5063107A | Silicon carbide fibre and production thereof | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4353747A | Hydraulic cement composition | Chemistry; Metallurgy | 14 | Expired |
| US4265406A | Comminution process | Performing Operations; Transporting | 13 | Expired |
| US5230951A | Production of fibre reinforced ceramic composite | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4377418A | Particulate filler, coated with material bonded thereto and containing a sulfur-containing group which releases sulfur as a curing agent for s-curable unsaturated polymers | Chemistry; Metallurgy | 11 | Expired |
| US4331490A | Ammonium nitrate slurry compositions | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5120689A | Coked product containing domains of oxides | Chemistry; Metallurgy | 11 | Expired |
| US4005172A | Solid complex phosphate of aluminum | Emerging Cross-Sectional Technologies | 10 | Expired |
| US3960592A | Phosphates | Emerging Cross-Sectional Technologies | 10 | Expired |
| US3974072A | Filtration method | Chemistry; Metallurgy | 8 | Expired |
| US4482372A | Fluid fertilizer composition | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4008299A | Method of making a fibre of aluminium phosphate | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4038234A | Aqueous dispersion of fluorocarbon polymer and halogen-containing complex phosphate of aluminum | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5149439A | Water treatment agent | Emerging Cross-Sectional Technologies | 7 | Expired |
| US3950177A | Refractory compositions | Chemistry; Metallurgy | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.