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Official data from INPI

PROCESSO CONTÍNUO DE POLIMERIZAÇÃO DE EMULSÃO DE ACETATO DE VINILA E ETILENO

ConcedidaInvention Patent

Application data

Number

PI7902493

Type

Invention Patent

Filing

04/23/1979

Publication

-

Progress at the INPI

  1. Filing04/23/79
  2. Publication
  3. Examination10/20/81
  4. Allowance01/10/84
  5. Grant07/31/84
  6. Terminated07/20/93

The patent was granted on 07/31/1984 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: 07/31/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Air Products And Chemicals, Inc

US

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Inventors

D. W. (pessoa física)

L. W. (pessoa física)

Technical data

Priority claims

US

P: 899.421 · 04/24/1978

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/31/1984

RPI 719

Notificação para pagamento de retribuição

#13.1

05/02/1984

RPI 706

Deferimento

#9.1

01/10/1984

RPI 690

Exigência - art. 36 da LPI

#6.1

03/22/1983

RPI 648

6.2

06/22/1982

RPI 609

Pedido de certificado de adição de invenção

#5.1

04/13/1982

RPI 599

Solicitação de exame técnico

#4.1

10/20/1981

RPI 574

Anuidade - prazo legal encerrado

#18.2

07/20/1993

RPI 1181

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