Inventor

Hugo Schemmann

Inventor

Schaesberg, NL

Overview

1977–1998

Patent span

Electricity

Primary field (CPC H)

Patents· 31 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H02Kprimary

H02KDynamo-electric machines28%

B26BHand-held cutting tools not otherwise provided for22%

Y10TTechnical subjects covered by former us classification9%

A47JKitchen equipment5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

A23GCocoa3%

A45DHairdressing or shaving equipment3%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters3%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution3%

A61HPhysical therapy apparatus, e.g. devices for locating or stimulating reflex points in the body2%

PatentTitleYear

5,717,301'Electric motor assembly'1998 5,502,359'Small motor with permanent-magnet rotor'1996 5,164,654'Solar energy operated automatic charge device for electric appliances'1992 5,158,562'Epilating device having epilating rollers rotatingly drivable in opposite directions'1992 5,121,020'Rotor for an electric motor'1992 5,118,977'Two-pole single-phase synchronous motor with permanent-magnet rotor, and starting device for use in the single-phase synchronous motor'1992 5,022,315'Small electric household utensil for the production of foods by mixing by stirring'1991 5,012,147'Domestic vibration apparatus with lever drive'1991 4,979,297'Rotary shaving head for an electric shaving apparatus'1990 4,868,435'Single phase synchronous motor vibration apparatus'1989 4,827,204'Synchronous motor with dynamic damping'1989 4,827,171'Single-phase synchronous motor comprising a two-pole permanent-magnetic rotor and an eddy-current intermediate rotor'1989 4,812,691'Device for improving the stability of rotation of the rotor of a single-phase synchronous motor'1989 4,807,365'Method for making the shaving head of a dry-shaving apparatus'1989 4,803,390'Dual motor drive arrangement for a small domestic appliance'1989 4,791,327'Drive mechanism for a domestic vibration apparatus'1988 4,759,192'Domestic appliance comprising a tool'1988 4,760,297'Small appliance driven by unidirectional single-phase synchronous motor'1988 4,714,851'Single-phase synchronous motor comprising a two-pole permanent-magnet rotor'1987 4,709,752'Cooling arrangement for heat generating electrical components'1987 4,691,132'Synchronous motor with two-pole permanent-magnet soft-magnetic-core rotor'1987 4,684,840'Synchronous motor having a permanent-magnet modular rotor'1987 4,636,676'Single-phase synchronous motor with two-pole permanent-magnet rotor'1987 4,628,607'Vibration dry shaving apparatus driven by a bipolar uniphase synchronous motor'1986 4,621,423'Shear head of a dry-shaver comprising a shear foil which is clamped so as to be curved'1986 4,606,121'Drive mechanism for a vibration-type dry-shaver'1986 4,554,471'Electric motor having a U-shaped stator iron'1985 4,503,346'Electric motor having a stator iron of a bent shape'1985 4,500,825'Self-starting single-phase synchronous motor'1985 4,329,781'Shaving apparatus having a shear plate with hair-entry apertures and a cutting unit with lead cutters, which unit is drivable relative to the shear plate'1982 4,008,985'Pumping device for fluids'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1998Patents assigned to PHILIPS CORP (31)· patent assignee history

1977–1996Based in Schaesberg, NL· patent location history

1998Based in Landgraaf, NL· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
PHILIPS CORP	31	1977–1998

Locations

Location	Patents	Span
Schaesberg, NL	30	1977–1996
Landgraaf, NL	1	1998