Inventor · disambiguated record
Donald T. Bray
Also filed as: BRAY DONALD T · BRAY DONALD THEDORE · TONDREAU RAYMOND A
19 granted patents·1,112 citations·filing 1974–1992
97Inventor score
Top patents by PatentIndex Score
19 records- 0196US5275726ASpiral wound element for separationEXXON RESEARCH ENGINEERING CO·Filed 1992·Granted Jan 4, 1994·171 cites·16 claims
- 0296US4046685ASimultaneous production of multiple grades of purified water by reverse osmosisDESALINATION SYSTEMS·Filed 1976·Granted Sep 6, 1977·92 cites·9 claims
- 0395US4842736ASpiral wound membraneDESALINATION SYSTEMS·Filed 1988·Granted Jun 27, 1989·125 cites·13 claims
- 0491US4190537AWater storage control for reverse osmosis systemDESALINATION SYSTEMS·Filed 1977·Granted Feb 26, 1980·66 cites·8 claims
- 0591US3966616AMembrane cartridgeDESALINATION SYSTEMS·Filed 1974·Granted Jun 29, 1976·58 cites·4 claims
- 0690US4713175AWater purifier comprising stages mounted side-by-side to unitary headerNIMBUS WATER SYSTEMS INC·Filed 1986·Granted Dec 15, 1987·75 cites·6 claims
- 0790US4070280AManually operable reverse osmosis apparatusDESALINATION SYSTEMS·Filed 1976·Granted Jan 24, 1978·55 cites·12 claims
- 0889US4156645AConversion of sea water by reverse osmosisDESALINATION SYSTEMS·Filed 1977·Granted May 29, 1979·51 cites·9 claims
- 0987US4842724AWater purification apparatusNIMBUS WATER SYSTEMS INC·Filed 1988·Granted Jun 27, 1989·79 cites·13 claims
- 1087US4548714ASemipermeable membrane cartridge for use with a pressure containerDESALINATION SYSTEMS·Filed 1983·Granted Oct 22, 1985·61 cites·2 claims
- 1186US4711723AWater purification systemNIMBUS WATER SYSTEMS INC·Filed 1986·Granted Dec 8, 1987·58 cites·6 claims
- 1282US4077883AReverse osmosis system with automatic pressure relief valveDESALINATION SYSTEMS·Filed 1976·Granted Mar 7, 1978·37 cites·7 claims
- 1379US4021351AMembrane cartridge with improved central collection tubeDESALINATION SYSTEMS·Filed 1975·Granted May 3, 1977·32 cites·4 claims
- 1476US4230579ABrine flow control for membrane separation systemDESALINATION SYSTEMS·Filed 1979·Granted Oct 28, 1980·31 cites·5 claims
- 1576US3959146AReverse osmosis system with automatic flushingDESALINATION SYSTEMS·Filed 1974·Granted May 25, 1976·28 cites·8 claims
- 1673US3939074AApparatus for control of a reverse osmosis systemDESALINATION SYSTEMS·Filed 1974·Granted Feb 17, 1976·26 cites·2 claims
- 1771US4208289AReverse osmosis apparatus employing a reciprocating membrane cartridgeDESALINATION SYSTEMS·Filed 1978·Granted Jun 17, 1980·25 cites·4 claims
- 1870US4828708ASemipermeable membranesDESALINATION SYSTEMS·Filed 1987·Granted May 9, 1989·29 cites·8 claims
- 1969USD295438SWater treatment assembly headNIMBUS WATER SYSTEMS INC·Filed 1986·Granted Apr 26, 1988·13 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →