Robert D. MacDonald — 18 Patents at Masco

Robert D. MacDonald has been granted 18 US patents while listed as an inventor at Masco. The first was granted in 1980 and the most recent in November 1997. Robert D. MacDonald ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Robert D. MacDonald in Stillwater, MN, US.

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
5690051	Pet litter separation system including pull-out cover	Greg Fisher	1997-11-25
5386079	Wastewater treatment process	Robert E. Munson	1995-01-31
5343608	Method of forming an identification band	—	1994-09-06
5340018	Thermostatically controlled mixing valve	—	1994-08-23	$27,727,000
5323554	Tube identification band	—	1994-06-28
4981156	Temperature and volume control valve assembly	James R. Nicklas	1991-01-01
4901750	Temperature and volume control valve assembly	James R. Nicklas	1990-02-20	$6,259,000
4699172	Handle valve assembly	—	1987-10-13	$25,986,000
4640457	Thermostatic valve assembly	—	1987-02-03	$33,136,000
4609177	Valve	Larry G. Turner, Leo S. Stanish, Manfred K. Kuttruff, Walter J. Budzinski	1986-09-02
4562994	Valve	—	1986-01-07
4458839	Thermostatic valve assembly	—	1984-07-10	$10,260,000
4453567	Valve assembly	—	1984-06-12	$5,872,000
4429712	Faucet	—	1984-02-07	$11,578,000
4396353	Submersible sump pump	—	1983-08-02
4287641	Self-closing hinge	—	1981-09-08	$5,068,000
4200169	Stethoscope	Frederick W. Nelson	1980-04-29	$5,973,000
4192052	Method for bonding a heat exchanger fin to a tube	—	1980-03-11	$5,953,000

Robert D. MacDonald — 18 Patents

Issued Patents All Time

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