Method of making three-dimensional objects by additive manufacturing
US11312066B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2018 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Jan 9, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2791/001
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Provided is a method of making a three-dimensional object, which method may include the steps of: (a) producing an intermediate object (21) from a dual cure polymerizable liquid by additive manufacturing, the intermediate object having the shape of the three-dimensional object in warped or distorted form; (b) optionally washing the intermediate object; then (c) contacting the intermediate to a form (22), which form has a shape corresponding to the three-dimensional object, and with the intermediate conformed to the shape of the form; then (d) further curing the intermediate object in contact with the form to produce the three-dimensional object (24) under conditions in which the three-dimensional object retains a shape conformed to the form after separating therefrom; and then (e) separating the three-dimensional object from the form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.