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Official data from INPI

PROCESSO DE PROVER UM TUBO ALONGADO DE PARTES DE PAREDE RELATIVAMENTE ESPESSA E DELGADA E APARELHO PARA PROVER A PAREDE DE UM TUBO ALONGADO COM UMA PLURALIDADE DE PARTES DE PAREDE ESPESSAS E DELGADAS PRECISAMENTE LOCALIZADAS NO SENTIDO LONGITUDINAL DO TUBO

PublicadaInvention Patent

Application data

Number

PI8803367

Type

Invention Patent

Filing

07/06/1988

Publication

05/23/1989

Progress at the INPI

  1. Filing07/06/88
  2. Publication05/23/89
  3. Examination09/11/90
  4. Allowance01/02/96
  5. Grant09/24/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 05/23/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Aluminium Company Of America

US

Aluminum Company of America

US

See this company's full portfolio

Inventors

D. D. (pessoa física)

US

J. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

122.071 · 11/18/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

05/23/1989

RPI 970

Pedido de patente depositado

#2.1

12/13/1988

RPI 947

Carta-patente expirada

#21.1

Patente extinta em 06/07/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

09/24/1996

RPI 1347

Deferimento

#9.1

01/02/1996

RPI 1309

6.5

04/18/1995

RPI 1272

Exigência - art. 36 da LPI

#6.1

03/01/1995

RPI 1265

Solicitação de exame técnico

#4.1

09/11/1990

RPI 1032

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