Sorry to disappoint you but Ambisafe holds patent for regulation-aware tokens. They are more general technology for all kinds of tokens that check any third-party regulator database before enabling trade transaction. Here is a press release https://www.newsbtc.com/press-releases/orderbook-announces-one-kind-regulation-aware-protocol-tokenized-securities/


Also their ICO platform/decentralized exchange Orderbook has already implemented KYC/AML, Accredited Investor check and DocuSign. Currently they are in the process of getting license from SEC for private security offerings and public security offerings.

And they open with SAFT private round they don't speak about anywhere. But you can write a mail to Orderbook or ask in the telegram chat of their support and they might invite you to participate.