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Official data from INPI

CONJUNTO DE HASTE DE VÁLVULA

ConcedidaInvention Patent

Application data

Number

PI8006938

Type

Invention Patent

Filing

10/29/1980

Publication

-

Progress at the INPI

  1. Filing10/29/80
  2. Publication
  3. Examination08/30/83
  4. Allowance03/20/84
  5. Grant10/30/84
  6. Expired11/21/95

The letters patent expired on 11/21/1995: 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: 10/30/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M & FC Holding Company, Inc.

US

See this company's full portfolio

Inventors

E. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

089.848 · 10/31/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/30/1984

RPI 732

Republicação - classificação IPC

#15.11

10/02/1984

RPI 728

Notificação para pagamento de retribuição

#13.1

07/17/1984

RPI 717

Deferimento

#9.1

03/20/1984

RPI 700

Solicitação de exame técnico

#4.1

08/30/1983

RPI 671

Carta-patente expirada

#21.1

11/21/1995

RPI 1303

Pedido de licença compulsória

#20.1

10/15/1991

RPI 1089

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