Lapsed, fee not paid3 drawingsEnergy & Sustainability · US 11,162,697 B2
Mini-split add-on filter
A three-stage filter that mounts over a mini-split heat pump's air inlet.
Energy & Sustainability
Solar, batteries, charging, heating and power. 27 patents: 18 lapsed, 5 expired at full term, 4 likely abandoned.
Patents
Lapsed, fee not paid3 drawings
Lapsed, fee not paid3 drawingsEnergy & Sustainability · US 9,897,474 B2
Heating oil delivery monitor
A flow meter and temperature sensor on a delivery pipe that verify how much heating oil was actually delivered.
Lapsed, fee not paid7 drawingsEnergy & Sustainability · US 8,638,060 B2
Boat-trailer solar charger
Swiveling solar panels mounted on a boat trailer that keep the boat's battery charged while it sits.
Lapsed, fee not paid8 drawingsEnergy & Sustainability · US 8,575,939 B2
Built-in battery gauge
A battery with its own press-to-test indicator that shows how much charge is left.
Lapsed, fee not paid6 drawingsEnergy & Sustainability · US 11,165,274 B1
Chainsaw-engine battery charger
A modified chainsaw engine drives an alternator to recharge batteries away from the grid.
Lapsed, fee not paid3 drawingsEnergy & Sustainability · US 9,803,878 B2
Ice-cell portable cooler
A portable air conditioner that blows air over cells of frozen material kept in a separate chamber.
Lapsed, fee not paid2 drawingsEnergy & Sustainability · US 11,137,266 B2
Meter-reading camera clip
A small camera that clips over an electric meter's display and reads it, plus a clamp sensor for live current.
Lapsed, fee not paid7 drawingsEnergy & Sustainability · US 11,112,144 B2
Dome solar water heater
A solar heater made of nested curved surfaces, so water in the chamber between them heats from sun at any angle.
Expired, full term4 drawingsEnergy & Sustainability · US 6,127,804 A
Pulse-assisted lithium charger
A lithium-ion charger that combines steady linear charging with rest pulses, sharing one power transistor, to reach full capacity faster.
Expired, full term4 drawingsEnergy & Sustainability · US 6,100,665 A
Low-voltage battery booster
A charger that uses a voltage multiplier so a lower-voltage source, such as a solar cell, fuel cell or battery, can charge a higher-voltage battery.
Expired, full term6 drawingsEnergy & Sustainability · US 6,078,166 A
Noise-pulse battery reconditioner
A lead-acid battery charger that adds a noise signal to its charging voltage to excite sulfate crystals, using the battery's response as feedback.
Lapsed, fee not paid13 drawingsEnergy & Sustainability · US 8,678,345 B2
Modulating gas burner valve
A variable-orifice valve that feeds gas directly into a burner to hold a steady cooking temperature.
Lapsed, fee not paid7 drawingsEnergy & Sustainability · US 11,278,021 B1
Wildlife-safe wind turbine
Emitters on a wind turbine send out sound to steer birds and bats away from the blades.
Lapsed, fee not paid9 drawingsEnergy & Sustainability · US 9,829,216 B2
Opaque-cover solar collector
A solar heat collector whose dark opaque cover absorbs sunlight and passes the heat across a sealed air gap to a fluid-filled absorber.
Lapsed, fee not paid8 drawingsEnergy & Sustainability · US 11,136,959 B2
Wind-funnel tower
A polygonal tower of pivoting vanes around a vertical wind turbine that funnels wind into it from any direction.
Lapsed, fee not paid3 drawingsEnergy & Sustainability · US 9,729,104 B2
Floating tracking solar platforms
Solar collectors on platforms that float in a reservoir and turn to follow the sun.
Expired, full term5 drawingsEnergy & Sustainability · US 6,586,909 B1
Per-cell induction charger
A charger that feeds each cell of a multi-cell battery in parallel through an induction coil, without breaking the links between cells.
Likely abandoned5 drawingsEnergy & Sustainability · US 2019/0363547 A1
Adaptive fast charger
Charges a battery at the highest current it can take moment to moment, instead of a fixed rate, to charge faster with less heat.
Expired, full term10 drawingsEnergy & Sustainability · US 6,087,805 A
Charge-lock vehicle controller
A charging controller carried on a battery vehicle that locks the vehicle in place while it charges and cuts the charger's power before the contacts separate.
Likely abandoned17 drawingsEnergy & Sustainability · US 2017/0310272 A1
Floating solar array
Solar modules bound together into an array that floats on a pond or reservoir.
Likely abandoned16 drawingsEnergy & Sustainability · US 2017/0214359 A1
Contactless solar panel cleaner
Detects dust on a solar panel and removes it with electrostatic force, no water or brushes.
Lapsed, fee not paid7 drawingsEnergy & Sustainability · US 9,827,862 B2
Auto-plug EV charging stand
A charging stand that positions an electric vehicle by its tire, then moves positive and negative plugs out to connect automatically.
Lapsed, fee not paid5 drawingsEnergy & Sustainability · US 9,780,624 B2
Pendulum wave generator
A buoyant sphere drives a pendulum that turns ocean wave motion into electricity.
Lapsed, fee not paid6 drawingsEnergy & Sustainability · US 9,780,722 B1
Folded-mirror solar concentrator
A solar panel that uses a flat Cassegrain mirror concentrator and simple one-axis tracking to cut cost per watt.
Likely abandoned10 drawingsEnergy & Sustainability · US 2018/0050784 A1
Mobile artificial cloud
A moving formation of elevated panels or flat balloons that shades an area like a cloud.
Lapsed, fee not paid10 drawingsEnergy & Sustainability · US 9,850,877 B2
River turbine discharge housing
A housing for an underwater power turbine that takes in part of a current, extracts energy, and shapes how the spent flow rejoins the stream.
Lapsed, fee not paid4 drawingsEnergy & Sustainability · US 8,572,967 B1
High-efficiency OTEC plant
An ocean thermal energy plant that makes power and drinking water from the temperature difference in seawater.
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