Thomas C. Elder, Inc.
Records under this name other than patents Thomas C. Elder, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,129,575 | 8-Methoxypsoralen 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 4,129,576 | Process for making .omega.-chloro-2,3,4-trihydroxyacetophenone 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 4,216,154 | Process for making .alpha.-loweralkylfurocoumarins Term ended Term ended no later than Aug 5, 2000 · Low confidence | Term ended | Term ended no later than Aug 5, 2000 | Low confidence |
| US 4,235,781 | 6 Or 8 Haloallyl substituted 7-hydroxycoumarins Term ended Term ended no later than Nov 25, 2000 · Low confidence | Term ended | Term ended no later than Nov 25, 2000 | Low confidence |
| US 4,269,851 | 8-Aminoalkyl-4-alkylpsoralens Term ended Term ended no later than May 26, 2001 · Low confidence | Term ended | Term ended no later than May 26, 2001 | Low confidence |
| US 4,269,852 | 4'-Substituted-4,5',8-trialkylpsoralens Term ended Term ended no later than May 26, 2001 · Low confidence | Term ended | Term ended no later than May 26, 2001 | Low confidence |
| US 4,279,922 | Photosensitizing benzofuranacrylics Term ended Term ended no later than Jul 21, 2001 · Low confidence | Term ended | Term ended no later than Jul 21, 2001 | Low confidence |
| US 4,294,822 | 5-Aminoalkyl-4,4,8-trialkylpsoralens Term ended Term ended no later than Oct 13, 2001 · Low confidence | Term ended | Term ended no later than Oct 13, 2001 | Low confidence |
| US 4,294,847 | 8-Aminoalkyl-4-alkylisopsoralens Term ended Term ended no later than Oct 13, 2001 · Low confidence | Term ended | Term ended no later than Oct 13, 2001 | Low confidence |
| US 4,298,614 | 5'-Aminoalkyl-4',4-dialkylpsoralens Term ended Term ended no later than Nov 3, 2001 · Low confidence | Term ended | Term ended no later than Nov 3, 2001 | Low confidence |