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Official data from INPI

BOCAL DE INJEÇÃO DE GÁS

Em AnáliseInvention Patent

Application data

Number

PI8504748

Type

Invention Patent

Filing

09/26/1985

Publication

04/28/1987

Progress at the INPI

  1. Filing09/26/85
  2. Publication04/28/87
  3. Examination03/07/89
  4. Allowance08/17/93
  5. Grant02/16/94
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 03/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. C. (pessoa física)

JP

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Inventors

N. T. (pessoa física)

JP

R. T. (pessoa física)

JP

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

03/07/1989

RPI 959

Publicação do pedido de patente

#3.1

04/28/1987

RPI 862

Pedido de patente depositado

#2.1

12/10/1985

RPI 790

Carta-patente expirada

#21.1

Patente extinta em 26/09/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

02/16/1994

RPI 1211

Deferimento

#9.1

08/17/1993

RPI 1185

Exigência - art. 36 da LPI

#6.1

01/19/1993

RPI 1155

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