Inventor
William C. Stewart
Inventor
Gladstone, OR, US
Overview
Patents· 19 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B01Dprimary
B01DSeparation13%
C02FTreatment of water, waste water, sewage, or sludge11%
G09FDisplaying7%
Y02ATechnologies for adaptation to climate change7%
Y02WClimate change mitigation technologies related to wastewater treatment or waste management7%
A47BTables4%
A47FSpecial furniture, fittings, or accessories for shops, storehouses, bars, restaurants or the like4%
C12MApparatus for enzymology or microbiology4%
Y10TTechnical subjects covered by former us classification4%
A47CChairs2%
PatentTitleYear
10,736,440Modular refrigeration systems20209,068,156'Horizontal plate microbial support media'20158,765,449'Three stage, multiple phase anaerobic digestion system and method'20147,678,084'Medication dispensing apparatus with gear set for mechanical advantage'20106,971,197'Display board system'20056,578,498'Furniture accessory kit for portable computers and the like'20036,551,818'Biological filter structures'20036,479,276'Biological filter apparatus'20026,272,779'Display board system'20016,263,602'Display board system'20016,189,474'Self-contained ship\'s hold cargo recovery and cleaning vessel and method'20016,126,824'Scum removal system for liquid treatment tank'20005,902,990'Bar code scanner guide'19995,864,675'Data capture system erases all information stored in flash memory if available storage in the flash memory is less than the maximum segment size'19995,829,075'Adjustable foundation for use with a bed frame'19985,624,576'Pelletized composition for treatment of storm water runoff'19975,518,920'Biological treatment of hazardous waste'19965,322,629'Method and apparatus for treating storm water'19945,046,157'Time control device for appliances'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2015Patents assigned to STEWART WILLIAM C (3)· patent assignee history
1991–1999Based in Raleigh, NC, US· patent location history
1994–2003Based in Gladstone, OR, US· patent location history
1998Patents assigned to ARK ELL SPRINGS INC (1)· patent assignee history
2001–2005Based in Providence, RI, US· patent location history
2002–2003Patents assigned to BIO REACTION IND LLC (2)· patent assignee history
2003–2005Patents assigned to STEELCASE DEV CORP (2)· patent assignee history
2010–2020Based in Ipswich, MA, US· patent location history
2014–2015Patents assigned to ADVANCED BIO ENERGY DEV LLC (2)· patent assignee history
2014–2015Based in Caldwell, ID, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| STEWART WILLIAM Cself | 3 | 1991–2015 |
| ADVANCED BIO ENERGY DEV LLC | 2 | 2014–2015 |
| BIO REACTION IND LLC | 2 | 2002–2003 |
| STEELCASE DEV CORP | 2 | 2003–2005 |
| ARK ELL SPRINGS INC | 1 | 1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Gladstone, OR, US | 5 | 1994–2003 |
| Providence, RI, US | 3 | 2001–2005 |
| Raleigh, NC, US | 3 | 1991–1999 |
| Ipswich, Massachusetts, US | 2 | 2010–2020 |
| Caldwell, ID, US | 2 | 2014–2015 |