Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5128021 | Pitch from coal tar pitch, method of its production, as well as application of such pitch material | Rudolf Geier, Rolf Helmut Joest, Wilhelm Wullscheidt | 1992-07-07 |
| 5069795 | Process for separating hydrocarbons from waste water | Reinhard Pass | 1991-12-03 |
| 4764355 | Process for removal of solid and gaseous noxious matter from hot gases | Erwin Ahland, Reinhard Pass, Franz Verfuss | 1988-08-16 |
| 4517086 | Tubular filter apparatus | Rudiger Lennartz | 1985-05-14 |
| 4414344 | Modified synthetic plastic from thermoplastic synthetics and coal hydrogenation residues | Menachem El-Roy | 1983-11-08 |
| 4410646 | Form masses from thermoplastic synthetic materials and residues of coal hydrogenation | Menachem El-Roy | 1983-10-18 |
| 4351739 | Sound absorbent panel | Willi Trojan | 1982-09-28 |
| 4341301 | Adhesive securing of anchors in borehole | Frank Meyer | 1982-07-27 |
| 4333816 | Method for the production of needle coke | Georg Kolling, Hellmut Kokot | 1982-06-08 |
| 4310422 | Method of processing and recirculating filtration residues | Reinhard Pass | 1982-01-12 |
| 4289604 | Method of producing an isotropic coke | Georg Kolling, Gerhard Pietzka, Harald Tillmanns | 1981-09-15 |
| 4265771 | Alluvial filter candle apparatus and a method of cleaning the same | Rudiger Lennartz | 1981-05-05 |
| 4261832 | Membranes with preselected pore types for separation processes | Horst Schumacher, Harald Juntgen, Ernst Preuss, Dieter Zundorf, Werner Hodek | 1981-04-14 |
| 4259473 | Process for making self-curing or curable materials from coal hydrogenation distillate residues | Menachem El-Roy | 1981-03-31 |
| 4231856 | Purifying filter-clogging coal tar formed from low-temperature coal carbonization | Hellmut Kokot | 1980-11-04 |
| 4219405 | Method of continuously producing coke | Gerhard Pietzka, Harald Tillmanns | 1980-08-26 |
| 4204986 | Sealing, caulking and protective shielding composition of thermoplastic synthetic materials and carbonaceous materials | Aloys Schlutter, Rolf Sommerfeld | 1980-05-27 |
| 4205035 | Coal-containing shaped bodies and process for making the same | Carl Kroger, Georg Kolling | 1980-05-27 |
| 4183802 | Process for the production of coke from pitch | — | 1980-01-15 |