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Official data from INPI

PROCESSO DE ENCAPSULAMENTO DE MATERIAL IMISCÍVEL EM ÁGUA DENTRO DE CÁPSULAS DISTINTAS DE POLIURÉIA SEM ADIÇÃO DE UM SEGUNDO REAGENTE E CÁPSULAS CAPAZES DE DESPRENDIMENTO CONTROLADO DE MATERIAL ORGÂNICO ENCAPSULADO

DeferidaInvention Patent

Application data

Number

PI8500071

Type

Invention Patent

Filing

01/08/1985

Publication

08/13/1985

Progress at the INPI

  1. Filing01/08/85
  2. Publication08/13/85
  3. Examination04/22/87
  4. Allowance11/21/89
  5. Grant06/26/90
  6. Expired07/15/08

The letters patent expired on 07/15/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 11/21/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Stauffer Chemical Company

US

See this company's full portfolio

Inventors

H. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

569.066 · 01/09/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

11/21/1989

RPI 996

Solicitação de exame técnico

#4.1

04/22/1987

RPI 861

Publicação do pedido de patente

#3.1

08/13/1985

RPI 773

Pedido de patente depositado

#2.1

04/09/1985

RPI 755

Carta-patente expirada

#21.1

Patente extinta em 08/01/2000

07/15/2008

RPI 1958

Republicação - classificação IPC

#15.11

05/14/1991

RPI 1067

Concessão da patente

#16.1

06/26/1990

RPI 1024

Notificação para pagamento de retribuição

#13.1

03/27/1990

RPI 1011

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