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Official data from INPI

PROCESSO PARA A FABRICAÇÃO DE UMA FÔRMA DE FUNDIÇÃO

ConcedidaInvention Patent

Application data

Number

PI8002997

Type

Invention Patent

Filing

11/14/1980

Publication

-

Progress at the INPI

  1. Filing11/14/80
  2. Publication
  3. Examination
  4. Allowance12/06/88
  5. Grant08/29/89
  6. Expired06/13/95

The letters patent expired on 06/13/1995: 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: 08/29/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ashland Oil, Inc

US

See this company's full portfolio

Inventors

J. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

39.016 · 05/14/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/29/1989

RPI 984

Notificação para pagamento de retribuição

#13.1

04/25/1989

RPI 966

Deferimento

#9.1

12/06/1988

RPI 946

Exigência - art. 36 da LPI

#6.1

05/10/1988

RPI 916

Exigência - art. 36 da LPI

#6.1

11/03/1987

RPI 889

Exigência - art. 36 da LPI

#6.1

02/28/1984

RPI 697

Carta-patente expirada

#21.1

06/13/1995

RPI 1280

20.7

11/09/1993

RPI 1197

18.8

10/30/1990

RPI 1039

Anuidade - prazo legal encerrado

#18.2

07/24/1990

RPI 1025

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