Carl Freudenberg KG
Carl FreudActive Patents
0
Total Holdings
30
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| DE2834863B2 | Alarm or theft protection | Expired / Lapsed | 1978-08-09 | — | 0 | Details |
| GB478136A | Improvements in or relating to oil seals for moving machine… | Expired / Lapsed | 1936-07-10 | — | 0 | Details |
| US4889349A | Sealing arrangement | Expired / Lapsed | 1987-05-15 | 1989-12-26 | 23 | Details |
| US4646733A | Endotracheal tube for a high-frequency respirator | Expired / Lapsed | 1985-09-30 | 1987-03-03 | 25 | Details |
| US4596394A | Cartridge seal | Expired / Lapsed | 1985-03-22 | 1986-06-24 | 21 | Details |
| US4478620A | Air filter | Expired / Lapsed | 1982-12-06 | 1984-10-23 | 7 | Details |
| US4434204A | Spun-bonded fabric of partially drawn polypropylene with a … | Expired / Lapsed | 1982-09-10 | 1984-02-28 | 7 | Details |
| US4373000A | Soft, drapable, nonwoven interlining fabric | Expired / Lapsed | 1981-07-31 | 1983-02-08 | 11 | Details |
| US4324097A | Non-return valve | Expired / Lapsed | 1980-12-03 | 1982-04-13 | 7 | Details |
| US4320201A | Method for making collagen sponge for medical and cosmetic … | Expired / Lapsed | 1980-09-02 | 1982-03-16 | 11 | Details |
| US4277072A | Seal for the gap between a revolving shaft and the bore of … | Expired / Lapsed | 1979-12-06 | 1981-07-07 | 18 | Details |
| US4128679A | Soft, non-woven fabrics and process for their manufacture | Expired / Lapsed | 1974-10-21 | 1978-12-05 | 25 | Details |
| US4080185A | Composite filter set for gas flow ducts | Expired / Lapsed | 1976-09-16 | 1978-03-21 | 2 | Details |
| US3823212A | Process for the production of collagen fiber fabrics in the… | Expired / Lapsed | 1971-05-28 | 1974-07-09 | 0 | Details |
| US3822173A | Needled felt flooring | Expired / Lapsed | 1972-12-29 | 1974-07-02 | 0 | Details |
| US3756907A | Production of perforated non woven fibrous webs | Expired / Lapsed | 1970-11-17 | 1973-09-04 | 0 | Details |
| US3565729A | Non-woven fabric | Expired / Lapsed | 1969-05-29 | 1971-02-23 | 0 | Details |
| US3546004A | Method of producing water vapor and air permeable films of … | Expired / Lapsed | 1966-02-24 | 1970-12-08 | 0 | Details |
| US3539144A | Mold for molding polyurethane foam articles | Expired / Lapsed | 1966-08-29 | 1970-11-10 | 0 | Details |
| US3509009A | Non-woven fabric | Expired / Lapsed | 1967-02-06 | 1970-04-28 | 0 | Details |
| US3439085A | Process for the production of non-woven elastic polyurethan… | Expired / Lapsed | 1964-10-21 | 1969-04-15 | 2 | Details |
| US3034922A | Water-soluble paper and method of making it | Expired / Lapsed | 1959-07-23 | 1962-05-15 | 2 | Details |
| US2852812A | Manufacture of artificial sausage casings | Expired / Lapsed | 1955-03-24 | 1958-09-23 | 2 | Details |
| FR877344A | Process for manufacturing flat products from superpolyamides | Expired / Lapsed | 1941-11-29 | 1942-12-03 | 0 | Details |
| US2256034A | Artificial leather substitute | Expired / Lapsed | 1938-02-26 | 1941-09-16 | 0 | Details |
| FR850296A | Shaft assembly | Expired / Lapsed | 1939-02-14 | 1939-12-12 | 0 | Details |
| US2120851A | Process for the manufacture of spun goods, fabrics, and oth… | Expired / Lapsed | 1935-09-09 | 1938-06-14 | 0 | Details |
| US2105036A | Process for the manufacture of spun goods, fabrics, and oth… | Expired / Lapsed | 1935-05-03 | 1938-01-11 | 0 | Details |
| US2103163A | Process for rendering fibers or threads from animal collage… | Expired / Lapsed | 1936-04-21 | 1937-12-21 | 0 | Details |
| US2090902A | Method of producing fibrous materials from animal skins | Expired / Lapsed | 1934-08-31 | 1937-08-24 | 0 | Details |