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Official data from INPI

PROCEDIMIENTO DE ALVEAMENTO MELHORADO

Em AnáliseInvention Patent

Application data

Number

PI7901857

Type

Invention Patent

Filing

09/30/1978

Publication

-

Progress at the INPI

  1. Filing09/30/78
  2. Publication
  3. Examination
  4. Allowance05/10/83
  5. Grant12/27/83
  6. Expired06/21/94

The letters patent expired on 06/21/1994: 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: 06/07/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ERCO IND LTD

Inventors

R. W. (pessoa física)

R. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

06/07/1988

RPI 920

20.3

11/10/1987

RPI 890

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/10/1983

RPI 655

Exigência - art. 36 da LPI

#6.1

03/30/1982

RPI 597

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

Pedido de licença compulsória

#20.1

05/04/1993

RPI 1170

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