Assignee
PPA IND INC
US·7 granted patents·219 citations·filing 1990–2020
Top patents by PatentIndex Score
7 records- 0191US5041800ALower power oscillator with heated resonator (S), with dual mode or other temperature sensing, possibly with an insulative support structure disposed between the resonator (S) and a resonator enclosurePPA IND INC·Filed 1990·Granted Aug 20, 1991·115 cites·30 claims
- 0275US4985687ALow power temperature-controlled frequency-stabilized oscillatorPPA IND INC·Filed 1990·Granted Jan 15, 1991·43 cites·8 claims
- 0372US11364461B2Air filtration media with performing enhancing additives and method for application thereofPPA IND INC·Filed 2019·Granted Jun 21, 2022·0 cites·17 claims
- 0464US11338234B2Air filtration media with performing enhancing additivesPPA IND INC·Filed 2020·Granted May 24, 2022·0 cites·17 claims
- 0554US5218797APrefabricated panel enclosure systemPPA IND INC·Filed 1991·Granted Jun 15, 1993·25 cites·16 claims
- 0645US5197248APrefabricated column assemblyPPA IND INC·Filed 1992·Granted Mar 30, 1993·18 cites·12 claims
- 0742US5110094AB-shaped structural member and fastening systemPPA IND INC·Filed 1990·Granted May 5, 1992·18 cites·5 claims
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