The Boeing Company had two satellite-relevant patents issue on April 28, 2026, and both are about keeping a spacecraft alive rather than about what it does in orbit. US12615851B2 (“Prefabricated conductors on a substrate to facilitate corner connections for a solar cell array”) covers the wiring layout of a satellite's solar array, and US12615709B2 (“Multi-embedded circuit board”) covers a circuit board with a cold plate that pulls heat out of a power amplifier — the kind of thermal problem a spacecraft's electronics face with no air to cool them. Because these are issued grants, the coverage is enforceable now, and read together they sit on the power-and-plumbing layer of a satellite bus.

The week's context is worth stating plainly: granted space patents are a thin slice of any week's issuances, and a keyword sweep for spacecraft hardware in this window returns only a few dozen records, most of them incidental mentions buried in battery and semiconductor patents. Among the genuine space-hardware grants, Boeing — with three issuances that week — is the most recognizable name, which is why its cluster anchors this map. The two satellite-system grants are best read against Boeing's deeper, decades-long satellite footprint rather than as standalone events.

Power and heat

The solar-array grant is a manufacturing-and-layout claim, not a cell-chemistry one. US12615851B2 describes a substrate fabricated so that an area “remains exposed when at least one solar cell having at least one cropped corner… is attached,” with conductors printed in that exposed corner region and buried conductors making the series connections that “determine a flow of power through a plurality of solar cells.” That is coverage on how an array is wired and assembled — the corner-to-corner and column-to-column connections of a tiled solar panel — classified in the H10F photovoltaic family. The thermal grant, US12615709B2, claims a circuit board with “a power amplifier within the substrate” and a cold plate with “one or more first cooling elements configured to extract heat from the power amplifier.” Power generation on one grant, heat rejection on the other: the two ends of the energy problem every satellite has to solve.

The substrate may also include buried conductors for making series connections that determine a flow of power through a plurality of solar cells, including corner-to-corner and column-to-column connections for the plurality of solar cells that are attached to the substrate in a two-dimensional (2-D) grid of an array.— Prefabricated conductors on a substrate to facilitate corner connections for a solar cell array, US12615851B2

The footprint these grants extend

Boeing's issued satellite record is long and concentrated on the bus — the spacecraft platform itself — rather than on any single payload. The control-systems corner is dense: US8439312B2 and US8282043B2 both claim “simultaneous momentum dumping and orbit control” for a geostationary satellite, reducing the maneuvers and dedicated thrusters a satellite needs to hold its station, and US7142981B2 covers laser-rangefinder pointing for spacecraft rendezvous. The power-and-structure corner is where the new grants land: US10457425B2 claims an “anti-nadir battery radiator” that mounts battery packs to a panel for thermal management, and US9796488B2 covers a dual-port payload-attach-ring design for mounting multiple spacecraft to one launch vehicle. And a third corner runs through payload operations: US12191977B2 and US12021848B2 both claim “secure enclave” methods for hosted-payload operations, letting one operator run a secure payload aboard another's satellite.

Set against that map, the April 28 grants are infill rather than a new frontier. They reinforce Boeing's coverage on the bus's power and thermal systems — the solar array that generates power, the cold plate that sheds the heat the electronics produce — alongside the attitude, orbit, structural and payload-operations claims it already holds. The grounded reading is that Boeing continues to convert satellite-platform engineering into issued coverage across the systems that make a bus function, not toward any single mission capability.

What an issued footprint defines, and what it does not

A granted claim is enforceable coverage over the mechanism it recites as of its issue date; it is not proof the mechanism flies on a current program, nor a measure of breadth — that is a claims question, not a map question. What the record supports is the factual statement: as of April 28, 2026, Boeing added issued claims on solar-array wiring (H10F classes) and on cooled spacecraft circuit boards (H05K classes), and those claims extend a satellite footprint already spanning attitude and orbit control, battery thermal management, payload attachment and secure hosted-payload operations. In a week when space-sector grant volume was otherwise sparse, that cluster is the receipt for where the prime's satellite engineering has been accumulating — on the power, heat and structure of the bus.