Astech. Co., Ltd.
Records under this name other than the patents Astech. Co., Ltd. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned. None of them is counted in the 1 patents it holds.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 11,420,963 | Novel Revamipide Prodrugs, Preparation Method and Use Thereof Lapsed on the fee record Ended Aug 23, 2026 · High confidence | Lapsed on the fee record | Ended Aug 23, 2026 | High confidence |
| US 3,949,172 | Telephone extension system utilizing power line carrier signals Term ended Term ended no later than Apr 6, 1996 · Low confidence | Term ended | Term ended no later than Apr 6, 1996 | Low confidence |
| US 4,058,678 | Remote signalling to a telephone line utilizing power line carrier signals Term ended Term ended no later than Nov 15, 1997 · Low confidence | Term ended | Term ended no later than Nov 15, 1997 | Low confidence |
| US 4,129,269 | Single-skin thrust reverser for aircraft jet engines Term ended Term ended no later than Dec 12, 1998 · Low confidence | Term ended | Term ended no later than Dec 12, 1998 | Low confidence |
| US 4,182,501 | Thrust reverser for jet engine forming active extension of jet tube Term ended Term ended no later than Jan 8, 2000 · Low confidence | Term ended | Term ended no later than Jan 8, 2000 | Low confidence |
| US 4,212,442 | Thrust reverser Term ended Term ended no later than Jul 15, 2000 · Low confidence | Term ended | Term ended no later than Jul 15, 2000 | Low confidence |
| US 4,362,015 | Double jet gas turbine engine equipped with a thrust reverser Term ended Term ended no later than Dec 7, 2002 · Low confidence | Term ended | Term ended no later than Dec 7, 2002 | Low confidence |
| US 4,422,605 | Reverser for jet engine Term ended Term ended no later than Dec 27, 2003 · Low confidence | Term ended | Term ended no later than Dec 27, 2003 | Low confidence |
| US 4,475,193 | Power line carrier multi telephone extension system for full duplex conferencing between telephones Term ended Term ended no later than Oct 2, 2004 · Low confidence | Term ended | Term ended no later than Oct 2, 2004 | Low confidence |
| US 4,479,033 | Telephone extension system utilizing power line carrier signals Term ended Term ended no later than Oct 23, 2004 · Low confidence | Term ended | Term ended no later than Oct 23, 2004 | Low confidence |