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Official data from INPI

Sistema de controle de velocidade para um elevador

PublicadaInvention Patent

Application data

Number

PI8901806

Type

Invention Patent

Filing

04/14/1989

Publication

11/28/1989

Progress at the INPI

  1. Filing04/14/89
  2. Publication11/28/89
  3. Examination06/02/92
  4. Allowance06/03/97
  5. Grant07/28/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: 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: 11/28/1989. 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

Y. K. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

63-94898 · 04/18/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

11/28/1989

RPI 997

Pedido de patente depositado

#2.1

05/30/1989

RPI 971

Carta-patente expirada

#21.1

Patente extinta em 14/04/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

06/03/1997

RPI 1383

Solicitação de exame técnico

#4.1

06/02/1992

RPI 1122

Solicitação de exame não realizada

#4.2

02/25/1992

RPI 1108

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