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Official data from INPI

ADITIVO APERFEICOADO PARA COMUNICAR PODER LUBRIFICANTE E ESTABILIDADE TERMICA A UMA COMPOSICAO DE POLIMERO DE CLORETO DE VINILA

ConcedidaInvention Patent

Application data

Number

PI7802078

Type

Invention Patent

Filing

04/06/1977

Publication

-

Progress at the INPI

  1. Filing04/06/77
  2. Publication
  3. Examination
  4. Allowance12/29/87
  5. Grant06/28/88
  6. Terminated01/28/92

The patent was granted on 06/28/1988 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 06/28/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

M & T CHEMICALS INC

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Inventors

E. A. (pessoa física)

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/28/1988

RPI 923

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Conhecimento de parecer técnico

#7.1

01/31/1984

RPI 693

Anuidade - prazo legal encerrado

#18.2

01/28/1992

RPI 1104

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