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Official data from INPI

SEM TITULO

Em AnáliseInvention Patent

Application data

Number

PI8106237

Type

Invention Patent

Filing

09/29/1981

Publication

06/15/1982

Progress at the INPI

  1. Filing09/29/81
  2. Publication06/15/82
  3. Examination12/14/82
  4. Allowance09/18/84
  5. Grant03/26/85
  6. Terminated03/19/96

The patent was granted on 03/26/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 10/21/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Dresser Industries, INC.

US

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Inventors

R. R. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

201

10/21/1986

RPI 835

Pedido de licença voluntária

#17.1

05/20/1986

RPI 813

Concessão da patente

#16.1

03/26/1985

RPI 753

Notificação para pagamento de retribuição

#13.1

01/15/1985

RPI 743

Deferimento

#9.1

09/18/1984

RPI 726

8.1

07/17/1984

RPI 717

Exigência - art. 36 da LPI

#6.1

01/03/1984

RPI 689

Solicitação de exame técnico

#4.1

12/14/1982

RPI 634

Publicação do pedido de patente

#3.1

06/15/1982

RPI 608

Pedido de patente depositado

#2.1

11/17/1981

RPI 578

Anuidade - prazo legal encerrado

#18.2

03/19/1996

RPI 1320

Pedido de licença compulsória

#20.1

08/28/1990

RPI 1030

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