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Official data from INPI

MATERIAIS AMORFOS E ARTIGOS RESISTENTES AO DESGASTE E PROCESSO PARA SUA FABRICAÇÃO.

Em AnáliseInvention Patent

Application data

Number

PI8406927

Type

Invention Patent

Filing

05/21/1984

Publication

06/04/1985

Progress at the INPI

  1. Filing05/21/84
  2. Publication06/04/85
  3. Examination05/05/87
  4. Allowance05/09/89
  5. Grant03/20/90
  6. Terminated07/04/95

The patent was granted on 03/20/1990 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/05/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Dresser Industries, Inc.

US

See this company's full portfolio

Inventors

D. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

503.174 · 06/10/1983

US

PCT/84/00790 · 05/21/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Notificação para pagamento de retribuição

#13.1

12/05/1989

RPI 998

9.1.3

08/08/1989

RPI 981

Deferimento

#9.1

05/09/1989

RPI 968

Exigência - art. 36 da LPI

#6.1

10/18/1988

RPI 939

Solicitação de exame técnico

#4.1

05/05/1987

RPI 863

Notificação de entrada na fase nacional - PCT

#1.3

06/04/1985

RPI 763

Anuidade - prazo legal encerrado

#18.2

07/04/1995

RPI 1283

Concessão da patente

#16.1

03/20/1990

RPI 1010

Notificação para pagamento de retribuição

#13.1

01/02/1990

RPI 1000

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