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Official data from INPI

CONSTRUÇÃO DE FECHO DE RECIPIENTE.

ConcedidaInvention Patent

Application data

Number

PI8303006

Type

Invention Patent

Filing

06/01/1983

Publication

01/31/1984

Progress at the INPI

  1. Filing06/01/83
  2. Publication01/31/84
  3. Examination04/03/84
  4. Allowance06/23/87
  5. Grant12/29/87
  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: 12/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

American Flange & Manufacturing Co. Inc.

US

Inventors

D. B. (pessoa física)

L. J. (pessoa física)

M. H. (pessoa física)

Technical data

IPC Classification

Priority claims

US

373.023 · 06/03/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/29/1987

RPI 897

Notificação para pagamento de retribuição

#13.1

10/20/1987

RPI 887

Deferimento

#9.1

06/23/1987

RPI 870

Exigência - art. 36 da LPI

#6.1

06/24/1986

RPI 818

6.2

04/09/1985

RPI 755

Solicitação de exame técnico

#4.1

04/03/1984

RPI 702

Publicação do pedido de patente

#3.1

01/31/1984

RPI 693

Pedido de patente depositado

#2.1

07/19/1983

RPI 665

Carta-patente expirada

#21.1

Patente extinta em 01/06/98

07/01/2008

RPI 1956

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