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6655 results about "Support system" patented technology

Blockchain identity management system based on public identities ledger

The invention describes an identity management system (IDMS) based on the concept of peer-to-peer protocols and the public identities ledger. The system manages digital identities, which are digital objects that contain attributes used for the identification of persons and other entities in an IT system and for making identity claims. The identity objects are encoded and cryptographically encapsulated. Identity management protocols include the creation of identities, the validation of their binding to real-world entities, and their secure and reliable storage, protection, distribution, verification, updates, and use. The identities are included in a specially constructed global, distributed, append-only public identities ledger. They are forward- and backward-linked using the mechanism of digital signatures. The linking of objects and their chaining in the ledger is based on and reflect their mutual validation relationships. The identities of individual members are organized in the form of linked structures called the personal identities chains. Identities of groups of users that validated identities of other users in a group are organized in community identities chains. The ledger and its chains support accurate and reliable validation of identities by other members of the system and by application services providers without the assistance of third parties. The ledger designed in this invention may be either permissioned or unpermissioned. Permissioned ledgers have special entities, called BIX Security Policy Providers, which validate the binding of digital identities to real-world entities based on the rules of a given security policy. In unpermissioned ledgers, community members mutually validate their identities. The identity management system provides security, privacy, and anonymity for digital identities and satisfies the requirements for decentralized, anonymous identities management systems.
Owner:MUFTIC SEAD

Substrate support system for reduced autodoping and backside deposition

A substrate support system comprises a relatively thin circular substrate holder having a plurality of passages extending between top and bottom surfaces thereof. The substrate holder includes a single substrate support ledge or a plurality of substrate support spacer vanes configured to support a peripheral portion of the substrate backside so that a thin gap is formed between the substrate and the substrate holder. The vanes can be angled to resist backside deposition of reactant gases as the substrate holder is rotated. A hollow support member provides support to an underside of the substrate holder. The hollow support member is configured to convey gas (e.g., inert gas or cleaning gas) upward into one or more of the passages of the substrate holder. The upwardly conveyed gas flows into the gap between the substrate and the substrate holder. Depending upon the embodiment of the invention, the gas in the gap can then flow either (1) outward and upward around the substrate edge or (2) downward through passages of the substrate holder, if any, that do not lead back into the hollow support member. The gas that flows outward and upward around the substrate edge inhibits backside deposition of reactant gases above the substrate. The gas that flows downward through the passages that do not lead back to the support member advantageously inhibits autodoping by sweeping out-diffused dopant atoms away from the substrate front side. In one embodiment, the support member comprises a hollow multi-armed support spider that conveys gas into selected ones of the passages. In another embodiment, the support member comprises a bowl- or cup-shaped structure that conveys gas upward into all of the passages. In yet another embodiment, the support member comprises a bowl- or cup-shaped structure that conveys gas upward into all but one or more of the passages.
Owner:ASM IP HLDG BV
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