Robert L Freitas, Age 78Smartsville, CA

8171568, May 1, 2012

Sep 4, 2008

12/204642

Robert A. Freitas - Pilot Hill CA, US
Ralph C. Merkle - Cupertino CA, US

G01Q 70/18
G01Q 80/00
B82B 3/00
B82B 1/00

850 61, 850 62, 977859, 977877

The invention provides methods of using positionally controlled molecular tools in an inert environment (such as ultra high vacuum) to fabricate complex atomically precise structures, including diamond, graphite, nanotubes, fullerenes, additional sets of the selfsame molecular tools, and others. Molecular tools have atomically precise tooltips which interact directly with a workpiece to add, remove, and modify specific atoms and groups of atoms, and have handles by which they can be held and positioned; tools can be recharged after use. Specific tooltips are brought into contact with and bond to specific feedstock molecules distributed on a presentation surface, and then transfer said feedstock molecules to specific atomic sites on a workpiece using mechanosynthetic chemical reactions. Specific sites on a workpiece can be made chemically reactive, facilitating the transfer of specific groups to them. Repeated applications of molecular tools at different locations on a workpiece can build a desired atomically precise structure.

2019025, Aug 15, 2019

Apr 16, 2019

16/385692

- Ottawa, CA
Jeremy Barton - Ottawa, CA
Michael Drew - Union City CA, US
Robert A. Freitas - Pilot Hill CA, US
Aru Hill - San Jose CA, US
Matthew Robert Kennedy - Tucker GA, US
Ralph C. Merkle - Santa Clara CA, US
Tait Takatani - Plano TX, US
Michael Shawn Marshall - Lilburn GA, US

G01Q 80/00
C01B 32/28
C01B 32/26
B82B 3/00

Build sequences for fabricating an atomically-precise product can be determined using computational chemistry algorithms to simulate mechanosynthetic reactions, and which may use the mechanosynthesis process conditions or equipment limitations in these simulations, to determine a set of mechanosynthetic reactions that will build an atomically-precise workpiece with a desired degree of reliability. Methods for error correction of pathological reactions or avoidance of pathological reactions are disclosed. Libraries of reactions may be used to reduce simulation requirements.

2018013, May 17, 2018

Nov 16, 2016

15/353380

Ralph C. Merkle - Cupertino CA, US
Robert A. Freitas - Pilot Hill CA, US
Jeremy Barton - Folsom CA, US
Aru Hill - San Jose CA, US
Michael Drew - Union City CA, US
Damian Allis - Syracuse NY, US
Tait Takatani - Sparks NV, US
Michael Shawn Marshall - Liburn GA, US
Matthew Kennedy - Tucker GA, US

G01Q 70/18

Methods, systems, and devices are described which facilitate mechanosynthesis through the sequential use of a plurality of tips, each of which may have a different affinity for feedstock, thereby allowing tip to tip transfers which enhance system versatility and reduce equipment complexity.

2018009, Apr 5, 2018

Jul 7, 2016

15/204845

Ralph C. Merkle - Cupertino CA, US
Robert A. Freitas - Pilot Hill CA, US

C07B 61/00
B82B 3/00

Methods and systems for building three-dimensional workpieces are described using a plurality of mechanosynthetic reactions. These methods may employ engineered reliability in reactions and process conditions and may use simulated or otherwise vetted reaction sequences, to allow workpieces requiring many reactions to be built with acceptable reliability. These many reactions may be the repetition of one or a small number of reactions, or many diverse reactions, or a combination thereof.