Inventor
Walter Birdsell
Inventor
Marlborough, MA, US
Overview
Patents· 59 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
LOC23primary
LOC2348%
F24FAir-conditioning13%
A47JKitchen equipment7%
F24HFluid heaters, e.g. water or air heaters, having heat-generating means, e.g. heat pumps, in general7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
F04DNon-positive-displacement pumps4%
B01FMixing, e.g. dissolving, emulsifying or dispersing3%
LOC073%
A47GHousehold or table equipment1%
A47LDomestic washing or cleaning1%
PatentTitleYear
10,398,279Dispensing enclosure for a container2019D0680211'Fan'20137,403,702'Secure mounting arrangement for U-shaped bolts and other device'2008D0514864'Water dispensing unit with a filtration tank'2006D0513928'Water dispenser universal filtration tank'20066,874,771'Humidifier with a heating disc'20056,830,433'Tower fan'2004D0489122'Electric heater'20046,682,308'Fan with adjustable mount'2004D0483456'Heater'2003D0483455'Heater'20036,585,486'Electrical appliance enclosure with removable side wall'2003D0476724'Heater fan'2003D0469526'Humidifier'2003D0468818'Heater fan'2003D0468819'Humidifier'2003D0466599'Heater fan'20026,466,737'Portable electric space heater'20026,321,033'Tamper resistant electrical environmentally conditioning device'2001D0448071'Portable electric heater'2001D0446291'Portable electric heater'2001D0445173'Heater'20016,167,193'Portable electric heater with digital display'20006,164,630'Portable humidifier with water treatment substance dispenser'20006,149,138'Portable humidifier with keyed replaceable cartridge element'20006,149,141'Portable evaporative humidifier apparatus'20006,131,889'Evaporative humidifier with liquid distribution system'20006,092,292'Can opener'20006,091,888'Portable environmental conditioning device with presence detector responsive shutoff'2000D0424675'Vaporizer'20006,052,511'Humidifier with removable water supply tank'2000D0422677'Water treatment container'20006,019,355'Contractible portable humidifier'2000D0418911'Portable electric heater'2000D0418591'Portable electric heater'20005,988,457'Beverage vessel'19995,970,211'Portable vaporizer with cooling chamber'19995,964,141'Coffeemaker'1999D0408903'Portable electric heater'1999D0408511'Humidifier'1999D0406885'Vaporizer'1999D0405520'Portable fan'1999D0405171'Portable electric heater'1999D0402363'Portable fan'1998D0402021'Humidifier'1998D0401315'Portable electric heater'1998D0401316'Humidifier'1998D0401314'Portable electric heater'1998D0400659'Portable electric heater'1998D0398043'Portable humidifier'1998D0397195'Humidifier'1998D0397193'Portable electric heater'1998D0396526'Portable electric heater'1998D0396527'Portable electric heater'1998D0395490'Portable space heater'1998D0384733'Portable space heater'19975,539,856'Electric coffeemaker with keep warm control responsive to the amount of coffee brewed'19965,379,682'Hot water generator assembly for coffeemaker'19955,370,040'Water reservoir for a coffeemaker'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–1996Patents assigned to BLACK & DECKER INC (3)· patent assignee history
1994–1999Based in Beacon Falls, CT, US· patent location history
1998–2000Patents assigned to HONEYWELL INC (23)· patent assignee history
1998–2003Patents assigned to HONEYWELL CONSUMER PRODUCTS INC (12)· patent assignee history
1998–2000Based in Shrewsbury, MA, US· patent location history
1999–2019Based in Marlborough, MA, US· patent location history
2000Based in Marlboro, MA, US· patent location history
2001–2003Patents assigned to HONEYWELL INT INC (5)· patent assignee history
2003–2008Patents assigned to KAZ INC (10)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HONEYWELL INC | 23 | 1998–2000 |
| HONEYWELL CONSUMER PRODUCTS INC | 12 | 1998–2003 |
| KAZ INC | 10 | 2003–2008 |
| HONEYWELL INT INC | 5 | 2001–2003 |
| BLACK & DECKER INC | 3 | 1994–1996 |
Locations
| Location | Patents | Span |
|---|---|---|
| Marlborough, Massachusetts, US | 37 | 1999–2019 |
| Shrewsbury, Massachusetts, US | 15 | 1998–2000 |
| Beacon Falls, CT, US | 6 | 1994–1999 |
| Marlboro, Massachusetts, US | 1 | 2000 |