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Official data from INPI

CIRCUITO MULTIPLICADOR

Arquivada/ExtintaInvention PatentPCT · JP1988000705

Application data

Number

PI8807132

Type

Invention Patent

Filing

07/15/1988

Publication

10/31/1989

PCT

JP1988000705

Progress at the INPI

  1. Filing07/15/88
  2. Publication10/31/89
  3. Examination06/25/91
  4. Allowance08/26/97
  5. Grant08/25/98
  6. Expired08/26/08

The letters patent expired on 08/26/2008: 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: 10/31/1989. 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. O. (pessoa física)

JP

Y. K. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

62-178689 · 07/17/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação de entrada na fase nacional - PCT

#1.3

10/31/1989

RPI 993

Carta-patente expirada

#21.1

Patente extinta em 25/08/2008

08/26/2008

RPI 1964

Concessão da patente

#16.1

08/25/1998

RPI 1444

Deferimento

#9.1

08/26/1997

RPI 1395

Solicitação de exame técnico

#4.1

06/25/1991

RPI 1073

Solicitação de exame não realizada

#4.2

03/19/1991

RPI 1059

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