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Official data from INPI

APERFEICOAMENTO EM ESTRUTURA CONCAVA,E EM ESTRUTURA DE SUPORTE,INTEGRANTE EM MAQUINA COMBINADA DE FLUXO AXIAL

Em AnáliseInvention Patent

Application data

Number

PI7702166

Type

Invention Patent

Filing

06/07/1976

Publication

-

Progress at the INPI

  1. Filing06/07/76
  2. Publication
  3. Examination
  4. Allowance07/13/82
  5. Grant01/25/83
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 09/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Sperry S.A.

RJ, BR

Inventors

E. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

693.676 · 06/07/1976

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

09/30/1986

RPI 832

20.4

09/30/1986

RPI 832

20.7

09/23/1986

RPI 831

20.7

12/26/1984

RPI 740

20.7

12/18/1984

RPI 739

Concessão da patente

#16.1

01/25/1983

RPI 640

Notificação para pagamento de retribuição

#13.1

11/30/1982

RPI 632

Deferimento

#9.1

07/13/1982

RPI 612

Exigência - art. 36 da LPI

#6.1

11/03/1981

RPI 576

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

20.8

10/13/1992

RPI 1141

20.7

10/01/1991

RPI 1087

20.4

07/31/1990

RPI 1026

Pedido de licença compulsória

#20.1

07/24/1990

RPI 1025

20.4

06/26/1990

RPI 1024

20.7

06/26/1990

RPI 1024

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