Hiroaki Takashima
24Patents
8h-index
24Co-inventors
75Inventor score
Filing activity: Nov 8, 1977 → Aug 27, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4397830A | Starting pitches for carbon fibers | Textiles; Paper | 13 | Expired |
| US4474617A | Pitch for carbon fibers | Chemistry; Metallurgy | 11 | Expired |
| US4620919A | Pitch for the production of carbon fibers | Chemistry; Metallurgy | 11 | Expired |
| US4460557A | Starting pitches for carbon fibers | Textiles; Paper | 10 | Expired |
| US4470960A | Process for the production of pitch-derived carbon fibers | Chemistry; Metallurgy | 10 | Expired |
| US4469667A | Process for production of pitch-derived carbon fibers | Textiles; Paper | 10 | Expired |
| US4229221A | Method for producing refractories | Chemistry; Metallurgy | 9 | Expired |
| US4177132A | Process for the continuous production of petroleum-derived pitch | Chemistry; Metallurgy | 9 | Expired |
| US4575411A | Process for preparing precursor pitch for carbon fibers | Chemistry; Metallurgy | 7 | Expired |
| US4391788A | Starting pitches for carbon fibers | Chemistry; Metallurgy | 6 | Expired |
| US5061413A | Process for producing pitch-based carbon fibers | Textiles; Paper | 5 | Expired |
| US4231857A | Process for preparing petroleum-derived binder pitch | Chemistry; Metallurgy | 5 | Expired |
| US4521294A | Starting pitches for carbon fibers | Textiles; Paper | 4 | Expired |
| US4579645A | Starting pitch for carbon fibers | Textiles; Paper | 4 | Expired |
| US4220474A | Amorphous refractory compositions | Chemistry; Metallurgy | 3 | Expired |
| US4533535A | Starting pitches for carbon fibers | Textiles; Paper | 3 | Expired |
| US9403990B2 | Curing-type coating-agent composition | Chemistry; Metallurgy | 2 | Active |
| US8900712B2 | Member for vehicle and manufacturing process for the same | Emerging Cross-Sectional Technologies | 2 | Active |
| US8716360B2 | Curing-type coating-agent composition | Performing Operations; Transporting | 1 | Active |
| US4440624A | Starting pitches for carbon fibers | Textiles; Paper | 1 | Expired |
| US9428667B2 | Member for vehicle and manufacturing process for the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US9359521B2 | Member for vehicle and manufacturing process for the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US5470558A | Process for producing pitch-based carbon fibers superior in compression characteristics | Chemistry; Metallurgy | 0 | Expired |
| US4490239A | Pitch for carbon fibers | Textiles; Paper | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.