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Official data from INPI

CONTROLE DE VELOCIDADE PARA UM INVERSOR, APARELHAGEM PARA UM ACIONADOR DE INVERSOR E SISTEMA DE CONTROLE DE VELOCIDADE

PublicadaInvention Patent

Application data

Number

PI8901464

Type

Invention Patent

Filing

03/29/1989

Publication

11/14/1989

Progress at the INPI

  1. Filing03/29/89
  2. Publication11/14/89
  3. Examination01/28/92
  4. Allowance06/14/94
  5. Grant12/27/94
  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: 11/14/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Otis Elevator Company

US

See this company's full portfolio

Inventors

K. D. (pessoa física)

US

K. Y. (pessoa física)

US

Technical data

IPC Classification

Priority claims

JP

63-76986 · 03/30/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/14/1989

RPI 995

Pedido de patente depositado

#2.1

05/09/1989

RPI 968

Carta-patente expirada

#21.1

Patente extinta em 29/03/2004

12/15/2009

RPI 2032

Concessão da patente

#16.1

12/27/1994

RPI 1256

Notificação para pagamento de retribuição

#13.1

10/18/1994

RPI 1246

Deferimento

#9.1

06/14/1994

RPI 1228

Solicitação de exame técnico

#4.1

01/28/1992

RPI 1104

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