Purification Sciences Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4330732 Plasma ceramic coating to supply uniform sparking action in combustion enginesExpiredMar 14, 80May 18, 82[F02P, F02F]
4327688 Cylinder pressure control of fluid injection in an internal combustion engineExpiredApr 16, 80May 04, 82[F02M, F02P]
4326483 Internal combustion engine with oxidant manufactureExpiredApr 16, 80Apr 27, 82[F02B]
4300486 Internal combustion engine system technical fieldExpiredApr 13, 79Nov 17, 81[F02B]
4290268 Vehicle braking and kinetic energy recovery systemExpiredSep 15, 78Sep 22, 81[F01K]
4240381 Internal combustion engine systemExpiredMay 08, 79Dec 23, 80[F02B]
4238925 Gas turbine system with oxygen vapor-fuel systemExpiredSep 11, 78Dec 16, 80[F02C]
4230075 Internal combustion engineExpiredDec 26, 78Oct 28, 80[F02B]
4228659 Gas turbine systemExpiredMay 22, 78Oct 21, 80[F01K]
4215659 Internal combustion engineExpiredNov 16, 78Aug 05, 80[P02B]

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