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Official data from INPI

PROCESSO APERFEICOADO PARA RECUPERACAO HIDROTERMICA DE METAL ALCALINO

Em AnáliseInvention Patent

Application data

Number

PI7900291

Type

Invention Patent

Filing

05/17/1978

Publication

-

Progress at the INPI

  1. Filing05/17/78
  2. Publication
  3. Examination01/12/82
  4. Allowance08/16/83
  5. Grant02/28/84
  6. Terminated06/14/88

The patent was granted on 02/28/1984 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

EXXON RESEARCH ENGINEERING CO

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Inventors

C. L. (pessoa física)

E. J. (pessoa física)

K. T. (pessoa física)

W. D. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

02/28/1984

RPI 697

Notificação para pagamento de retribuição

#13.1

12/06/1983

RPI 685

Deferimento

#9.1

08/16/1983

RPI 669

Exigência - art. 36 da LPI

#6.1

03/01/1983

RPI 645

6.2

06/22/1982

RPI 609

Solicitação de exame técnico

#4.1

01/12/1982

RPI 586

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