| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 3 | |
| #2 | Australia | 2 | |
| #3 | Germany | 2 | |
| #4 | Poland | 2 | |
| #5 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #6 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry |
| # | Technology | |
|---|---|---|
| #1 | Gas, coke and tar production | |
| #2 | Liquid hydrocarbon mixture production | |
| #3 | Working-up pitch | |
| #4 | Fuels |
| # | Name | Total Patents |
|---|---|---|
| #1 | Migitaka Wataru | 6 |
| #2 | Sunago Hirofumi | 5 |
| #3 | Miyazaki H | 2 |
| #4 | Nisihata Takanori | 2 |
| #5 | Ogawa Yukiyosi | 2 |
| #6 | Ogawa Yukiyoshi | 1 |
| #7 | Suetsugu Y | 1 |
| #8 | Tashiro Yubi | 1 |
| #9 | Iwasa Misao | 1 |
| #10 | Suetsuga Y | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2728605A1 | Needle coke from coal tar pitch - treated to ppte. quinoline-insolubles by addn. of aromatic and aliphatic solvents | |
| US4116815A | Process for preparing needle coal pitch coke | |
| AU7309674A | Process for calcination of solid carbonaceous materials | |
| US3799865A | Process for producing needle-shaped coal pitch coke |