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Official data from INPI

SISTEMA DE CONTROLE DE VELOCIDADE DO TIPO DE SUPRESSÃO DE CICLO PARA UM MOTOR ELÉTRICO DE CORRENTE ALTERNADA, TRIFÁSICO, DE VELOCIDADE VARIÁVEL

PublicadaInvention Patent

Application data

Number

PI8900187

Type

Invention Patent

Filing

01/17/1989

Publication

09/12/1989

Progress at the INPI

  1. Filing01/17/89
  2. Publication09/12/89
  3. Examination10/15/91
  4. Allowance06/28/94
  5. Grant03/28/95
  6. Expired12/15/09

The letters patent expired on 12/15/2009: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 09/12/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

General Electric Company

US

See this company's full portfolio

Inventors

H. B. (pessoa física)

US

T. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

145.064 · 01/19/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

09/12/1989

RPI 986

Pedido de patente depositado

#2.1

02/28/1989

RPI 958

Carta-patente expirada

#21.1

Patente extinta em 17/01/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

03/28/1995

RPI 1269

Notificação para pagamento de retribuição

#13.1

11/01/1994

RPI 1248

Deferimento

#9.1

06/28/1994

RPI 1230

Solicitação de exame técnico

#4.1

10/15/1991

RPI 1089

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