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Official data from INPI

MÉTODO DE FORMAÇÃO DE UMA PELÍCULA COMPÓSITA DE ÓXIDO DE ALUMÍNIO SOBRE SUPERFÍCIE DE MATERIAIS DE ALUMÍNIO

Em AnáliseInvention Patent

Application data

Number

PI8605133

Type

Invention Patent

Filing

02/06/1986

Publication

05/05/1987

Progress at the INPI

  1. Filing02/06/86
  2. Publication05/05/87
  3. Examination07/28/87
  4. Allowance05/27/97
  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: 07/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Fujitsu Limited

JP

See this company's full portfolio

Inventors

K. N. (pessoa física)

JP

K. S. (pessoa física)

JP

Technical data

IPC Classification

Priority claims

JP

60-19832 · 02/06/1985

JP

60-19833 · 02/06/1985

JP

60-21818 · 02/08/1985

JP

PCT/86/00047 · 02/06/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

07/28/1987

RPI 875

Notificação de entrada na fase nacional - PCT

#1.3

05/05/1987

RPI 863

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

05/27/1997

RPI 1382

Exigência - art. 36 da LPI

#6.1

07/02/1996

RPI 1335

Exigência - art. 36 da LPI

#6.1

12/12/1995

RPI 1306

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