Patents
US 11288411 B2: B-rep matching for maintaining associativity across CAD interoperation
- Granted
- 2022-03-29
- Filed
- 2020-01-06 application 16735194
- Type
- Utility · 19 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A method allows transferring references from vertices, edges, and faces of a solid or surface model to an edited model, by finding correspondences between vertices, edges, faces, and bodies of the models. The method begins by quickly finding matching bodies and aligning them, considering factors such as size, complexity, and the location of its vertices, edges, and faces. For every pair of matched bodies, it then matches exactly coincident vertices, edges, and faces. Of the remaining unmatched topology, it matches edges and faces in the new model that overlap those of the old model considerably. It uses near-neighbor structures to speed up the search for correspondences by eliminating old-new pairs of vertices, edges, and faces that do not overlap. Finally, it iteratively matches unmatched vertices, edges, and faces whose adjacent vertices, edges, and faces are in exact correspondence between the old and new models.
Source: PVGPATDIS, file of 2026-04-10 (ipg220329.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| PTC Inc. 61 patents | US company or organization | Boston, MA | PTC INC. Federal lobbying client EXACT high confidence: identical full name and state PTC INC. SEC filer EXACT medium confidence: identical full name, one of each nationally PTC CORPORATION Nonprofit FUZZY medium confidence: same name (governing-board words and legal endings aside) and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Ilya Baran | Belmont, MA | 12 | PVGPATDIS, file of 2026-04-10 | |
| Adriana Schulz | Seattle, WA | 1 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G06F | Electric digital data processing | G06F30/10 | PVGPATDIS, file of 2026-04-10 |
| G06T | Image data processing or generation, in general | G06T19/00 | 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 |
|---|---|---|---|---|---|
| 2023-01-03 | Security interest Security interest Security interest | PTC INC. signed 2023-01-03 | JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT CHICAGO, IL | 62257/311 | 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.