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Official data from INPI

CONJUNTO DE VÁLVULA PARA USO EM DRENAGEM CONTROLADA DE LÍQUIDO ACUMULADO EM VASO FECHADO.

ConcedidaInvention Patent

Application data

Number

PI8206769

Type

Invention Patent

Filing

11/23/1982

Publication

10/04/1983

Progress at the INPI

  1. Filing11/23/82
  2. Publication10/04/83
  3. Examination02/05/85
  4. Allowance11/05/85
  5. Grant07/29/86
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 07/29/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Cummins Engine Company, Inc.

US

See this company's full portfolio

Inventors

M. L. (pessoa física)

Technical data

Priority claims

US

323.940 · 11/23/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/29/1986

RPI 823

Notificação para pagamento de retribuição

#13.1

04/15/1986

RPI 808

Deferimento

#9.1

11/05/1985

RPI 785

8.1

09/24/1985

RPI 779

Republicação - classificação IPC

#15.11

08/27/1985

RPI 775

Solicitação de exame técnico

#4.1

02/05/1985

RPI 746

Publicação do pedido de patente

#3.1

10/04/1983

RPI 676

Pedido de patente depositado

#2.1

01/18/1983

RPI 639

Carta-patente expirada

#21.1

Patente extinta em 23/11/97

07/01/2008

RPI 1956

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