The dead company that keeps winning

In October 2024, View, Inc. laid off 147 people at its factory in Olive Branch, Mississippi. Six months earlier it had filed for Chapter 11. The stock, which had listed on the Nasdaq in 2021 at a $1.6 billion valuation in a merger sponsored by Cantor Fitzgerald, was gone. SoftBank’s $1.2 billion bet from 2018 was gone. Forbes ran the obituary under a plain headline: the downfall of a $2 billion smart-window company. By the time the lawyers were done, View had lost $426 million on $128 million of revenue in a single year and carried $350 million in debt.

And then it kept getting patents.

View’s US grants for dynamic-tinting glass didn’t taper as the company died. They peaked. The company was issued 64 US patents in 2023, the year its auditors were still cleaning up a financial restatement and its stock was staring at delisting. It got 55 more in 2024, the year it filed for bankruptcy. Even in the first three quarters of 2025, operating as a private shell owned by its former lenders under the name View Operating Corporation, it collected 45 more. The invention engine ran full speed while the business bled out.

Add it all up and one bankrupt company owns 441 US patents in this field. Since 2020 alone, View and its successor entity have been granted 142 patents that specifically claim electrochromic glass. That is more than SageGlass, Gentex, and Kinestral/Halio combined managed over the same stretch. In the US patent race to build a window that darkens on command, the runaway leader is a corpse.

What the window actually is

Strip away the branding and an electrochromic window is a five-layer sandwich. Two panes of glass, each coated with a transparent conductor, with a metal-oxide film and an ion store in between. Apply a couple of volts and lithium ions shuffle into the tungsten-oxide layer, which shifts from clear to deep blue. Reverse the voltage and they shuffle back out. No motors, no blinds, no moving parts. The glass itself is the machine.

View’s patents read like a field diary of everything that went wrong with that idea. One 2025 grant describes a three-part conductor with a metal layer sandwiched between two transparent oxide films, added to fight the resistance that made large panes tint unevenly. Another claims a “defect mitigation insulating layer,” which is engineering-speak for the pinholes and shorts that plague any device this large and this thin. A third is titled, almost plaintively, “Faster switching electrochromic devices.” View’s windows were famously slow, sometimes taking many minutes to fully clear, and half its patent portfolio is a record of the company chipping away at that lag one layer at a time.

The other half is a record of a company chasing a business it couldn’t afford. Beyond the 142 glass patents, View filed hundreds more since 2020 on building networks, window-mounted controllers that tint by outside temperature, sensors, even displays embedded in the glass and an eye-tracking kit. View wanted to be a smart-building platform. It ended up with a $130 million factory, a slow product, and a patent wall around a market that never showed up.

The palm-sized company that made money

Here is the part that should stop any hardware investor cold. The one company in this field that prints money makes almost none of these building patents. Gentex, in Zeeland, Michigan, reported record sales of about $2.58 billion in 2025. It shipped 47.7 million units and holds roughly 92 percent of the global market. Its product is the auto-dimming rear-view mirror, the little rectangle that goes dark when the car behind you has its brights on.

Same physics, opposite economics. Gentex’s electrochromic patents, like a 2025 grant on “electrochromic block copolymers,” are aimed at a piece of glass the size of your palm that sits in a controlled indoor environment, gets replaced with the car every few years, and ships in the tens of millions. View aimed the identical chemistry at architectural panes the size of a wall, exposed to decades of sun, sold one slow building at a time into commercial construction cycles that move like glaciers. The mechanism scaled. The manufacturing and the sales motion did not. Gentex quietly proved that the money in electrochromics was in the mirror all along.

The chemistry the survivors switched to

Which brings us to the interesting part, the reason this is a breakout and not just an autopsy. Look at who is filing now, and the chemistry has changed underneath the category.

The two fastest-moving challengers, Ambilight and Furcifer, have 44 US electrochromic grants between them since 2020, and almost none of them are about tungsten oxide on glass. They are about conductive polymers on film. Ambilight’s recent patents claim high-transparency electrochromic polymers and an n-doped organic conductor to replace the brittle transparent-oxide electrode entirely. Furcifer’s describe flexible films with edge protection and a method for laminating an electrochromic device into ordinary glass. Both companies run roll-to-roll printing lines, the same process used for packaging and printed labels, rather than the vacuum-deposition fabs that metal-oxide glass demands.

That single swap removes the exact constraint that killed View. A polymer film is a retrofit. Furcifer, a Silicon Valley startup, pitches it as an upgrade you laminate onto the windows a building already has, no new insulated glass units, no gigafactory, no ripping out a curtain wall. The product stops being a window, which is slow and capital-heavy to make and sell, and becomes a sticker, which is not.

The polymer route has a long paper trail. The foundational chemistry traces to John Reynolds’ lab, whose 1998 paper on poly(3,4-alkylenedioxythiophene) derivatives as “fast electrochromics” and 2004 paper on multicolored electrochromism in polymers, cited more than 800 times, showed that conjugated polymers could switch color faster and in more hues than metal oxides ever did. Ambilight was co-founded in 2017 by Jianguo Mei, a Purdue polymer chemist whose work sits squarely in that lineage. The company has since raised a C round reported in the hundreds of millions, with BYD and NIO Capital among its backers, betting that the winning form factor for dynamic tint is a film coming off a printing press in China, not a pane coming out of a fab in Mississippi.

Why it matters

For anyone deciding whether to enter dynamic glass, the patent map is a warning and an invitation at once. The warning: the dominant US portfolio, 441 grants deep, is now controlled by the lenders who took View private, so the freedom-to-operate question runs straight through a bankruptcy estate rather than an operating competitor. The invitation: that whole portfolio is built around a manufacturing model the market just rejected. The action moved to conductive-polymer film, where the incumbents’ oxide-on-glass claims may not reach, and where the capital needed to compete is measured in printing lines, not fabs. View spent roughly $2 billion proving that the hard part of a smart window was never the electrochromism. It was having to be a window. The companies that internalized that lesson stopped making windows.

Method note

Counts come from the full text of 9.3 million US utility grants sourced from USPTO bulk grant XML, filtered to patents whose claims or abstracts describe electrochromic devices, with assignee names consolidated across variant spellings and successor entities (View, Inc. and View Operating Corporation are counted as one). Grant-year figures reflect issue dates; 2025 is a partial year through late September. Company histories, financials, and funding figures are drawn from Forbes, Bisnow, Glass Magazine, PitchBook, and the companies’ own filings and sites; Gentex sales and market-share figures are from 2025 reporting. The conductive-polymer literature lineage was traced through OpenAlex citation counts. Patent counts describe filings, not products or revenue, and a large portfolio held by a bankrupt entity is a claim on the past as much as a bet on the future.