Official data from INPI

CORPO TUBULAR DE CONCRETO MASSA DE CIMENTO OU OUTRO MATERIAL CIMENTIFERO;PROCESSO PARA A FABRICACAO DE UM CORPO TUBULAR;E PROCESSO PARA A FABRICACAO DE UM TUBO DE CONCRETO

Em AnáliseInvention Patent

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Application data

Number

PI7705869

Type

Invention Patent

Filing

09/02/1977

Publication

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Progress at the INPI

Filing09/02/77
Publication
Examination
Refused08/16/83
Grant
In force

The application was refused on 08/16/1983 and the appeal did not change the decision. The invention was never patented and the technology is in the public domain in Brazil.

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Latest action published by the INPI: 05/28/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

AMEY ROADSTONE CORP

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

15.7

05/28/1985

RPI 762

111

08/16/1983

RPI 669

Conhecimento de parecer técnico

#7.1

03/29/1983

RPI 649

Petição de recurso

#12.2

10/05/1982

RPI 624

Indeferimento (variante)

#9.2.3

01/05/1982

RPI 585

Indeferimento

#9.2

11/03/1981

RPI 576

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