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Official data from INPI

APERTADOR

Em AnáliseInvention Patent
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Application data

Number

PI7902933

Type

Invention Patent

Filing

05/16/1978

Publication

-
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Progress at the INPI

  1. Filing05/16/78
  2. Publication
  3. Examination
  4. Allowance03/22/83
  5. Grant10/25/83
  6. Expired07/26/94

The letters patent expired on 07/26/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 04/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ITW LTD

Inventors

P. J. (pessoa física)

Technical data

IPC Classification

B25B 9/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

20.7

04/12/1988

RPI 912

Pedido de licença compulsória

#20.1

11/18/1986

RPI 839

Concessão da patente

#16.1

10/25/1983

RPI 679

Notificação para pagamento de retribuição

#13.1

08/02/1983

RPI 667

Deferimento

#9.1

03/22/1983

RPI 648

15.0

10/19/1982

RPI 626

Exigência - art. 36 da LPI

#6.1

06/29/1982

RPI 610

Carta-patente expirada

#21.1

07/26/1994

RPI 1234

20.7

06/25/1991

RPI 1073

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