Petoca, Ltd.
42Patents
0Active
42Granted
36Portfolio score
Filing activity: Jun 3, 1988 → Nov 19, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5795678A | Negative electrode for use in lithium secondary battery and process for producing the same | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5698341A | Carbon material for lithium secondary battery and process for producing the same | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5855663A | Carbon fibers for reinforcement of cement and cement composite material | Emerging Cross-Sectional Technologies | 28 | Expired |
| US5071631A | Porous carbon-carbon composite and process for producing the same | Chemistry; Metallurgy | 26 | Expired |
| US5652058A | Carbon fiber rovings for reinforcement of concrete | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5283113A | Process for producing carbon fiber felt | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5629062A | Fiber reinforced plastic pipe and process for producing the same | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5091164A | Porous carbon-carbon composite and process for producing the same | Chemistry; Metallurgy | 24 | Expired |
| US5795843A | Pitch-based activated carbon fiber | Textiles; Paper | 21 | Expired |
| US5792577A | Negative electrode material for use in lithium-ion secondary battery and process for producing the same | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4975262A | Three dimensional woven fabrics of pitch-derived carbon fibers | Textiles; Paper | 20 | Expired |
| US5951959A | Mesophase pitch-based carbon fiber for use in negative electrode of secondary battery and process for producing the same | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6118650A | Mesophase pitch-based activated carbon fibers and electric double layer capacitor using the same | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4975261A | Process for producing high strength carbon-carbon composite | Chemistry; Metallurgy | 18 | Expired |
| US5556723A | Negative electrode for use in a secondary battery | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6022518A | Surface graphitized carbon material and process for producing the same | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5035942A | Flexible materials for reflecting electromagnetic wave | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5254396A | Carbon fiber structure and process for producing the same | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5004511A | Process for producing non-woven fabrics of carbon fibers | Performing Operations; Transporting | 12 | Expired |
| US5356574A | Process for producing pitch based activated carbon fibers and carbon fibers | Chemistry; Metallurgy | 12 | Expired |
| US5686181A | Carbon fibers for reinforcement of cement and cement composite material | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5536486A | Carbon fibers and non-woven fabrics | Textiles; Paper | 11 | Expired |
| US4898723A | Method for producing high strength, high modulus mesophase-pitch based carbon fibers | Textiles; Paper | 8 | Expired |
| US6287729A | Graphite materials for negative electrode used in lithium secondary battery | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6303095A | Milled carbon fiber and process for producing the same | Emerging Cross-Sectional Technologies | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.