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Official data from INPI

VEDAÇÃO DE CALHA DE MANCAL

ConcedidaInvention Patent

Application data

Number

PI8200880

Type

Invention Patent

Filing

02/18/1982

Publication

-

Progress at the INPI

  1. Filing02/18/82
  2. Publication
  3. Examination03/19/85
  4. Allowance05/02/89
  5. Grant10/24/89
  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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

D. C. (pessoa física)

US

See this company's full portfolio

Inventors

B. Z. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

US.S/N 241,320 · 03/06/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/24/1989

RPI 992

Notificação para pagamento de retribuição

#13.1

09/05/1989

RPI 985

Deferimento

#9.1

05/02/1989

RPI 967

Exigência - art. 36 da LPI

#6.1

09/13/1988

RPI 934

Pedido de certificado de adição de invenção

#5.1

08/20/1985

RPI 774

Solicitação de exame técnico

#4.1

03/19/1985

RPI 752

Pedido de patente depositado

#2.1

04/06/1982

RPI 598

Carta-patente expirada

#21.1

Patente extinta em 18/02/97

07/01/2008

RPI 1956

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