Boston Robotics is renowned for teaching robots to walk. Above, one of the companys robots at an exposition in Quantico, Va.

After a rocky three-year marriage, Boston Dynamics, the Waltham company famed for making robots that walk like people or run like deer, has been dumped by Alphabet Inc., parent company of Google.

But its a soft landing for Boston Dynamics, a company that has yet to translate its innovative technologies into profitable products.

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Boston Dynamics fell into the arms of Softbank Group, a Japanese conglomerate that has recently been making billion-dollar bets on hot technologies ranging from satellite Internet systems to microchips.

Softbank also scooped up another Google property: Schaft, a Japanese maker of human-shaped robots. Financial details of the acquisitions were not revealed. But with 2016 net income of $13.2 billion, Softbank can certainly afford the investments.

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I think Softbank has made a major commitment to the future of robotics, said Daniel Theobald, cofounder of Vecna Technologies Inc., a robot maker based in Cambridge. They understand that the world economy is going to be driven by robotics more and more.

In 2013, about the same time Google bought Boston Dynamics, Softbank acquired Aldebaran Robotics, a French firm that makes human-shaped robots that roll on wheels, and are used as guides and greeters in Japanese retail stores.

But while Google is now backing off, Softbank is doubling down. With Boston Robotics in its portfolio, Softbank might someday offer walking robots that could stock store shelves, or provide home care for senior citizens.

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With birth rates falling and average population ages rising throughout the world, there are big opportunities for humanlike robots to supplement the flesh-and-blood workforce. Besides, said Dan Kara, research director for robotics at ABI Research in Oyster Bay, N.Y., Boston Robotics excels at teaching robots to walk. These are the worlds greatest experts on legged mobility, he said.

According to Damion Shelton, chief executive of Agility Robotics Inc. in Albany, Ore., Boston Dynamics new owners had better be patient. The technology right now is at the stage where self-driving cars were six years ago, said Shelton, whose company will build just five or 1o walking robots this year, for sale to university research labs.

Agility is working on a security guard robot, and thinks it could sell several hundred a year. But the product wont be ready for another two years. And it will be designed for relatively uncluttered areas, like walking the perimeter of a factory.

Designing a walking robot to move through a city is a much tougher task. Theres lots of stuff to run into, theres lots of things you dont want to step on, like pets or kids, and its a relatively unstructured environment, Shelton said.

Bruce Newman/Oxford Eagle/Associated Press

Pepper, a humanoid robot from Softbank Robotics America, at a tech show in Miss.

Boston Dynamics was spun off from the Massachusetts Institute of Technology in 1992, but has yet to bring a commercial product to market. For years, it subsisted on grants from the US military, developing machines like BigDog, a robotic pack mule that could carry ammunition and supplies into battle, and Atlas, a human-shaped robot capable of driving a car or climbing stairs, and designed for disaster relief missions.

Enter Alphabet, which acquired Boston Dynamics and several other small robot makers in 2013. The new owners backed away from accepting military contracts, and said they expected to turn robots into a profitable business in a few years. But three years later, nothing much had happened. They bought all these companies and they didnt do anything with them, said Kara.

Meanwhile, despite its ample resources, Alphabet was pulling away from investments that didnt promise near-term payoffs. For instance, it halted further expansion of Google Fiber, the costly effort to run high-speed Internet fibers to homes and businesses in major cities. And about a year ago, the company put Boston Dynamics on the auction block.

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Softbank bets on Boston robotics firm - The Boston Globe