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Official data from INPI

APARELHO REATOR QUÍMICO APERFEIÇOADO E SUPER LIGA A BASE DE NÍQUEL

Em AnáliseInvention Patent

Application data

Number

PI8704297

Type

Invention Patent

Filing

08/19/1987

Publication

04/12/1988

Progress at the INPI

  1. Filing08/19/87
  2. Publication04/12/88
  3. Examination07/26/88
  4. Allowance09/23/97
  5. Grant07/28/98
  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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Haynes International, Inc.

US

See this company's full portfolio

Inventors

D. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

6-898.568 · 08/21/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/26/1988

RPI 927

Publicação do pedido de patente

#3.1

04/12/1988

RPI 912

Pedido de patente depositado

#2.1

11/17/1987

RPI 891

Carta-patente expirada

#21.1

Patente extinta em 28/07/2008

08/26/2008

RPI 1964

Concessão da patente

#16.1

07/28/1998

RPI 1440

Deferimento

#9.1

09/23/1997

RPI 1399

Exigência - art. 36 da LPI

#6.1

03/25/1997

RPI 1373

Deferimento (variante)

#9.1.2

03/25/1997

RPI 1373

Deferimento

#9.1

11/05/1996

RPI 1353

Exigência - art. 36 da LPI

#6.1

06/21/1994

RPI 1229

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