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Official data from INPI

SISTEMA DE ATUACAO DE MUDANCA DE PASSO PARA HELICE DE PROPULSAO

ConcedidaInvention Patent

Application data

Number

PI8401460

Type

Invention Patent

Filing

06/15/1983

Publication

02/26/1985

Progress at the INPI

  1. Filing06/15/83
  2. Publication02/26/85
  3. Examination03/24/87
  4. Allowance04/12/88
  5. Grant08/30/88
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 08/30/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UNITED TECHNOLOGIES CORP [US]

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Inventors

D. G. (pessoa física)

S. A. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1988

RPI 932

Deferimento

#9.1

04/12/1988

RPI 912

Solicitação de exame técnico

#4.1

03/24/1987

RPI 857

Publicação do pedido de patente

#3.1

02/26/1985

RPI 749

Pedido de patente depositado

#2.1

06/12/1984

RPI 712

Carta-patente expirada

#21.1

Patente extinta em 29/03/99

08/19/2008

RPI 1963

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