Inventor · disambiguated record
Douglas S. Fraser
Also filed as: FRASER DOUGLAS · FRASER DOUGLAS S · THOMPSON TAYLOR N
17 granted patents·431 citations·filing 1975–2013
95Inventor score
Top patents by PatentIndex Score
17 records- 0191US4787752ALive component temperature conditioning device providing fast temperature variationsFTS SYSTEMS INC·Filed 1986·Granted Nov 29, 1988·111 cites·21 claims
- 0289US4197658ATissue freeze dryerFTS SYSTEMS INC·Filed 1978·Granted Apr 15, 1980·49 cites·9 claims
- 0378US9371001B2Sudden acceleration shutdown device using hydraulic brake pressure detector to disable vehicle on driver panicDARTMOUTH COLLEGE·Filed 2013·Granted Jun 21, 2016·6 cites·9 claims
- 0476US4142303AFreeze drying stoppering apparatusFTS SYSTEMS INC·Filed 1977·Granted Mar 6, 1979·23 cites·10 claims
- 0576US4109396AMethod and apparatus for an improved shelf and tray assembly for a freeze dryerFTS SYSTEMS INC·Filed 1976·Granted Aug 29, 1978·23 cites·10 claims
- 0674US3945603AValve particularly adapted for use in vacuum workFTS SYSTEMS INC·Filed 1975·Granted Mar 23, 1976·24 cites·5 claims
- 0772US5447374APositioning device for temperature sensor in freeze dryingFTS SYSTEMS INC·Filed 1994·Granted Sep 5, 1995·37 cites·30 claims
- 0872US4139992AShell freezerFTS SYSTEMS INC·Filed 1977·Granted Feb 20, 1979·25 cites·13 claims
- 0969US4966469APositioning device for temperature sensor in freeze dryingFTS SYSTEMS INC·Filed 1990·Granted Oct 30, 1990·22 cites·7 claims
- 1067US4745354AApparatus and methods for effecting a burn-in procedure on semiconductor devicesFTS SYSTEMS INC·Filed 1986·Granted May 17, 1988·36 cites·59 claims
- 1167US4084330AFlask for freeze drying with adjustable sealFTS SYSTEMS INC·Filed 1976·Granted Apr 18, 1978·18 cites·7 claims
- 1256US5015337AVapor recovery systemFRASER DOUGLAS S·Filed 1989·Granted May 14, 1991·24 cites·12 claims
- 1351US4017983AFreeze dryerFTS SYSTEMS INC·Filed 1975·Granted Apr 19, 1977·11 cites·14 claims
- 1442US4090312AFreeze dryer particularly adapted for freeze drying materials having highly corrosive vaporsFTS SYSTEMS INC·Filed 1976·Granted May 23, 1978·7 cites·9 claims
- 1540US4161857AFreeze drying container with manual stopperingFTS SYSTEMS INC·Filed 1978·Granted Jul 24, 1979·5 cites·9 claims
- 1636US4114287AAcid resistant freeze drying trapFTS SYSTEMS INC·Filed 1977·Granted Sep 19, 1978·5 cites·11 claims
- 1735US4163327ADirect condenser defrosting systemFTS SYSTEMS INC·Filed 1977·Granted Aug 7, 1979·5 cites·9 claims
Join the waitlist — get patent alerts
Get an alert when Douglas S. Fraser files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →