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Official data from INPI

MISTURA APERFEICOADA DE CIMENTO-HIDRAULICO E APERFEICOAMENTO EM PROCESSO PARA AUMENTO DA RESISTENCIA DE MISTURA DE CIMENTO HIDRAULICOS

Em AnáliseInvention Patent

Application data

Number

PI7707816

Type

Invention Patent

Filing

12/01/1976

Publication

-

Progress at the INPI

  1. Filing12/01/76
  2. Publication
  3. Examination
  4. Allowance03/16/82
  5. Grant
  6. Terminated12/15/87

The patent was granted and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/15/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MARTIN MARIETTA CORP

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

12/15/1987

RPI 895

Notificação para pagamento de retribuição

#13.1

07/20/1982

RPI 613

Deferimento

#9.1

03/16/1982

RPI 595

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