Patents
US 12056513 B2: Virtual machine migration using multiple, synchronized streams of state data transferring via file descriptors
- Granted
- 2024-08-06
- Filed
- 2021-03-17 application 17204099
- Type
- Utility · 18 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A server includes a hardware platform, a hypervisor platform, and at least one virtual machine operating as an independent guest computing device. The hypervisor includes a memory facilitator, at least two hardware emulators, a toolstack and an emulator manager. The memory facilitator provides memory for a virtual machine, with the memory having state data associated therewith at a current location within the virtual machine. The at least one hardware emulator provides at least one set of hardware resources for the virtual machine, with the at least one set of hardware resources having state data associated therewith at the current location within the virtual machine. The toolstack controls the hypervisor including generation of a start state data transfer request. The emulator manager coordinates transfer of the respective state data from the current location to a different location, and tracks progress of the transfer of the respective state data to the different location.
Source: PVGPATDIS, file of 2026-04-10 (ipg240806.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Citrix Systems, Inc. 2,209 patents | US company or organization | Fort Lauderdale, FL | CITRIX SYSTEMS INC SEC filer EXACT medium confidence: identical full name, one of each nationally | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Jennifer Rachel Herbert | Cambridge, GB | 4 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G06F | Electric digital data processing | G06F9/45558 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-08-15 | Security interest Security interest Patent security agreement | CLOUD SOFTWARE GROUP, INC. signed 2025-08-14 CITRIX SYSTEMS, INC. signed 2025-08-14 | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT WILMINGTON, DE | 72488/172 | PASDL, file of 2026-10-15 |
| 2024-05-24 | Security interest Security interest Security interest | CLOUD SOFTWARE GROUP, INC. (F/K/A TIBCO SOFTWARE INC.) signed 2024-05-22 CITRIX SYSTEMS, INC. signed 2024-05-22 | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT WILMINGTON, DE | 67662/568 | PASDL, file of 2026-10-15 |
| 2023-04-14 | Security interest Security interest Patent security agreement | CLOUD SOFTWARE GROUP, INC. (F/K/A TIBCO SOFTWARE INC.) signed 2023-04-10 CITRIX SYSTEMS, INC. signed 2023-04-10 | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT WILMINGTON, DE | 63340/164 | PASDL, file of 2026-10-15 |
| 2023-04-14 | Release of security interest Release and reassignment of security interest in patent (reel/frame 062113/0001) | GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT signed 2023-04-10 | CITRIX SYSTEMS, INC. FORT LAUDERDALE, FL CLOUD SOFTWARE GROUP, INC. (F/K/A TIBCO SOFTWARE INC.) FORT LAUDERDALE, FL | 63339/525 | PASDL, file of 2026-10-15 |
| 2022-10-07 | Security interest Security interest Patent security agreement | TIBCO SOFTWARE INC. signed 2022-09-30 CITRIX SYSTEMS, INC. signed 2022-09-30 | WILMINGTON TRUST, NATIONAL ASSOCIATION, AS NOTES COLLATERAL AGENT WILMINGTON, DE | 62113/470 | PASDL, file of 2026-10-15 |
| 2022-10-07 | Security interest Security interest Second lien patent security agreement | TIBCO SOFTWARE INC. signed 2022-09-30 CITRIX SYSTEMS, INC. signed 2022-09-30 | GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT NEW YORK, NY | 62113/1 | PASDL, file of 2026-10-15 |
| 2022-10-07 | Security interest Security interest Patent security agreement | TIBCO SOFTWARE INC. signed 2022-09-30 CITRIX SYSTEMS, INC. signed 2022-09-30 | BANK OF AMERICA, N.A., AS COLLATERAL AGENT CHARLOTTE, NC | 62112/262 | PASDL, file of 2026-10-15 |
| 2022-09-30 | Security interest Security interest Security interest | CITRIX SYSTEMS, INC. signed 2022-09-30 | WILMINGTON TRUST, NATIONAL ASSOCIATION WILMINGTON, DE | 62079/1 | PASDL, file of 2026-10-15 |
| 2021-03-18 | Assignment Assignment of assignor's interest | HERBERT, JENNIFER RACHEL signed 2017-12-08 | CITRIX SYSTEMS, INC. FORT LAUDERDALE, FL | 55634/8 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.