Official data from INPI

VASO DE ARMAZENAMENTO DE ACETILENO

Em AnáliseInvention Patent

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Application data

Number

PI8705318

Type

Invention Patent

Filing

10/07/1987

Publication

05/24/1988

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Progress at the INPI

Filing10/07/87
Publication05/24/88
Examination10/24/89
Allowance07/20/93
Grant03/29/94
Expired07/29/08

The letters patent expired on 07/29/2008: 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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

N.I. Industries, Inc.

Norris Cylinder Company

Inventors

E. F. (pessoa física)

Technical data

IPC Classification

C04B 28/18 C04B 38/00 F17C 11/00

Priority claims

919.083 · 10/14/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

10/24/1989

RPI 992

Publicação do pedido de patente

#3.1

05/24/1988

RPI 918

Pedido de patente depositado

#2.1

03/08/1988

RPI 907

Carta-patente expirada

#21.1

Patente extinta em 07/10/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

03/29/1994

RPI 1217

Deferimento

#9.1

07/20/1993

RPI 1181

14.1

01/12/1993

RPI 1154

Exigência - art. 36 da LPI

#6.1

10/06/1992

RPI 1140

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