Individual holder
STEFFEN SYLVESTER L
9 granted patents·217 citations·filing 1975–1979
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
9 records- 0194US4800653AMethod and apparatus for controlling the drying and cooling of field-harvested seeds in storageSTEFFEN SYLVESTER L·Filed 1979·Granted Jan 31, 1989·56 cites·32 claims
- 0283US4053991AAutomatic control for maintaining equilibrium temperature/moisture between stored grain and atmosphereSTEFFEN SYLVESTER L·Filed 1976·Granted Oct 18, 1977·30 cites·15 claims
- 0381US4256029APressure reducing exhaust method and structure for ventilated grain binsSTEFFEN SYLVESTER L·Filed 1978·Granted Mar 17, 1981·29 cites·1 claims
- 0474US4077134AMethod and structure for optimizing atmospheric environment to preserve stored food grains in the curing and post curing stateSTEFFEN SYLVESTER L·Filed 1976·Granted Mar 7, 1978·23 cites·12 claims
- 0574US4020565ADraft inducing roof for storage structuresSTEFFEN SYLVESTER L·Filed 1975·Granted May 3, 1977·23 cites·12 claims
- 0670US4045880ASolar grain drying apparatusSTEFFEN SYLVESTER L·Filed 1976·Granted Sep 6, 1977·26 cites·1 claims
- 0751US4148147AMethod for controlling the curing of field-harvested grains with minimum energy consumptionSTEFFEN SYLVESTER L·Filed 1977·Granted Apr 10, 1979·11 cites·16 claims
- 0847US4045878AVentilation process for inducing biochemical reactions in stored food grain while preserving dormancySTEFFEN SYLVESTER L·Filed 1975·Granted Sep 6, 1977·14 cites·3 claims
- 0937US4247989AMethod for identifying and maintaining a dormancy index in stored grainSTEFFEN SYLVESTER L·Filed 1978·Granted Feb 3, 1981·5 cites·5 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →