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Official data from INPI

DISPOSITIVO DE COBERTURA COM GÁS DE DEPÓSITO TRASEIRO EM SOLDA A ARCO

Prazo de SigiloInvention Patent
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Application data

Number

PI8903042

Type

Invention Patent

Filing

06/22/1989

Publication

02/06/1990
View on INPI

Progress at the INPI

  1. Filing06/22/89
  2. Publication02/06/90
  3. Examination01/14/92
  4. Allowance12/23/97
  5. Grant08/25/98
  6. Expired12/26/12

The letters patent expired on 12/26/2012: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 08/08/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. S. (pessoa física)

DK

Inventors

W. S. (pessoa física)

DK

Technical data

IPC Classification

B23K 9/16

Priority claims

DK

1957/89 · 04/24/1989

DK

3472/88 · 06/23/1988

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de patente depositado

#2.1

08/08/1989

RPI 981

Carta-patente expirada

#21.1

Patente extinta em 22/06/2009

12/26/2012

RPI 2190

Concessão da patente

#16.1

08/25/1998

RPI 1444

Deferimento

#9.1

12/23/1997

RPI 1409

Exigência - art. 36 da LPI

#6.1

03/25/1997

RPI 1373

6.2

03/19/1996

RPI 1320

Solicitação de exame técnico

#4.1

01/14/1992

RPI 1102

Publicação do pedido de patente

#3.1

02/06/1990

RPI 1005

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