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Official data from INPI

Aditivo inibidor de corrosão para conposições de cimento.

ArquivadaInvention Patent

Application data

Number

PI8307260

Type

Invention Patent

Filing

12/29/1983

Publication

08/07/1984

Progress at the INPI

  1. Filing12/29/83
  2. Publication08/07/84
  3. Abandoned09/16/86
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: the INPI technical office action was not answered in time (art. 36 of the Brazilian IP Act). The technology is in the public domain in Brazil.

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Latest action published by the INPI: 02/02/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W.R. Grace & Co.

US

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Inventors

D. H. (pessoa física)

H. D. (pessoa física)

Technical data

Priority claims

US

455.352 · 01/03/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 36 §1° da LPI

#11.2

02/02/1988

RPI 902

6.2

06/23/1987

RPI 870

Solicitação de exame técnico

#4.1

09/16/1986

RPI 830

Publicação do pedido de patente

#3.1

08/07/1984

RPI 720

Pedido de patente depositado

#2.1

03/13/1984

RPI 699

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. A classificação IPC anterior era C04B 7/35.

03/27/2018

RPI 2464

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