Inventor
Robert D. MacDonald
Inventor
Mesa, AZ, US
Overview
23→
Patents
1976–2021
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
Y10Tprimary
Y10TTechnical subjects covered by former us classification20%
F16KValves13%
G05DSystems for controlling or regulating non-electric variables9%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%
A01KAnimal husbandry5%
E05YIndexing scheme associated with subclasses e05d and e05f, relating to construction elements, electric control, power supply, power signal or transmission, user interfaces, mounting or coupling, details, accessories, auxiliary operations not otherwise provided for, application thereof5%
F28FDetails of heat-exchange and heat-transfer apparatus, of general application5%
B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling4%
E05DHinges or suspension devices for doors, windows or wings4%
F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact4%
PatentTitleYear
11,087,563Object creation with physical manipulation20215,690,051'Pet litter separation system including pull-out cover'19975,386,079'Wastewater treatment process'19955,343,608'Method of forming an identification band'19945,340,018'Thermostatically controlled mixing valve'19945,323,554'Tube identification band'19944,981,156'Temperature and volume control valve assembly'19914,901,750'Temperature and volume control valve assembly'19904,699,172'Handle valve assembly'19874,640,457'Thermostatic valve assembly'19874,609,177'Valve'19864,562,994'Valve'19864,458,839'Thermostatic valve assembly'19844,453,567'Valve assembly'19844,429,712'Faucet'19844,396,353'Submersible sump pump'19834,287,641'Self-closing hinge'19814,200,169'Stethoscope'19804,192,052'Method for bonding a heat exchanger fin to a tube'19804,163,474'Internally finned tube'19794,103,392'Door closing apparatus'19784,005,748'Annular heat exchanger fins'1977RE028786'Hinge for latchless door'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1980Based in Grand Blanc, MI, US· patent location history
1978–1994Patents assigned to MASCO CORP (10)· patent assignee history
1978–1986Based in Phoenix, AZ, US· patent location history
1979–1980Patents assigned to DU PONT (2)· patent assignee history
1981–1987Based in Mesa, AZ, US· patent location history
1986Patents assigned to BRASS CRAFT MFG CO (1)· patent assignee history
1986Patents assigned to BRASSCRAFT MANUFACTURING COMPA (1)· patent assignee history
1990–1994Based in Scottsdale, AZ, US· patent location history
1994Patents assigned to MACDONALD ROBERT D (2)· patent assignee history
2021Based in Plantation, FL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MASCO CORP | 10 | 1978–1994 |
| DU PONT | 2 | 1979–1980 |
| MACDONALD ROBERT Dself | 2 | 1994 |
| BRASS CRAFT MFG CO | 1 | 1986 |
| BRASSCRAFT MANUFACTURING COMPA | 1 | 1986 |
Locations
| Location | Patents | Span |
|---|---|---|
| Mesa, AZ, US | 8 | 1981–1987 |
| Scottsdale, AZ, US | 5 | 1990–1994 |
| Phoenix, AZ, US | 3 | 1978–1986 |
| Grand Blanc, MI, US | 3 | 1976–1980 |
| Plantation, Florida, US | 1 | 2021 |