Henry Dreyfuss Associates LLC
Henry DreyActive Patents
0
Total Holdings
16
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB518225A | Improvements in or relating to the treatment of textile mat… | Expired / Lapsed | 1938-08-16 | — | 0 | Details |
| GB445345A | Improvements in or relating to the colouration of materials… | Expired / Lapsed | 1934-09-28 | — | 0 | Details |
| GB400597A | Improvements in the production of foils of cellulose esters… | Expired / Lapsed | 1932-04-21 | — | 0 | Details |
| US2233475A | Cellulose compounds containing carboxy and amine groups | Expired / Lapsed | 1937-12-20 | 1941-03-04 | 0 | Details |
| US2210116A | Manufacture of artificial materials | Expired / Lapsed | 1937-06-18 | 1940-08-06 | 0 | Details |
| US2208632A | Textile yarn and process for producing it | Expired / Lapsed | 1936-03-28 | 1940-07-23 | 0 | Details |
| US2123152A | Treatment of cellulosic materials | Expired / Lapsed | 1935-11-05 | 1938-07-05 | 0 | Details |
| US2120551A | Manufacture of textile products | Expired / Lapsed | 1936-05-22 | 1938-06-14 | 0 | Details |
| US2111209A | Treatment of textile yarns | Expired / Lapsed | 1936-06-03 | 1938-03-15 | 0 | Details |
| US2100385A | Treatment of textile and other materials | Expired / Lapsed | 1935-04-20 | 1937-11-30 | 0 | Details |
| US2055892A | Manufacture of derivatives of cellulose and other carbohydr… | Expired / Lapsed | 1934-02-01 | 1936-09-29 | 0 | Details |
| US2045348A | Manufacture of films, foils, and the like containing cellul… | Expired / Lapsed | 1933-08-25 | 1936-06-23 | 0 | Details |
| US2042702A | Production or treatment of artificial materials | Expired / Lapsed | 1930-04-15 | 1936-06-02 | 0 | Details |
| US2039306A | Manufacture and treatment of artificial silk and the like | Expired / Lapsed | 1932-08-22 | 1936-05-05 | 0 | Details |
| US2031636A | Manufacture of artificial ribbons, straw, and the like | Expired / Lapsed | 1930-08-07 | 1936-02-25 | 0 | Details |
| US2007392A | Manufacture of films and foils | Expired / Lapsed | 1933-01-11 | 1935-07-09 | 0 | Details |