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Patents By Field of Search

Most Common Fields

  1. 428 - Stock material or miscellaneous articles (97698 patents):
    1. 428/913 - Stock material or miscellaneous articles (MATERIAL DESIGNED TO BE RESPONSIVE TO TEMPERATURE, LIGHT, MOISTURE, ETC.) (5560 patents)
    2. 428/323 - Stock material or miscellaneous articles (Including a second component containing structurally defined particles) (3946 patents)
    3. 428/900 - Stock material or miscellaneous articles (MAGNETIC FEATURE) (3849 patents)
    4. 428/447 - Stock material or miscellaneous articles (As siloxane, silicone or silane) (3537 patents)
    5. 428/480 - Stock material or miscellaneous articles (Of polyester (e.g., alkyd, etc.)) (3446 patents)
    6. 428/457 - Stock material or miscellaneous articles (Of metal) (3360 patents)
    7. 428/212 - Stock material or miscellaneous articles (Including components having same physical characteristic in differing degree) (3231 patents)
    8. 428/336 - Stock material or miscellaneous articles (1 mil or less) (3155 patents)
    9. 428/914 - Stock material or miscellaneous articles (TRANSFER OR DECALCOMANIA) (3104 patents)
    10. 428/500 - Stock material or miscellaneous articles (Of addition polymer from unsaturated monomers) (2771 patents)
  2. 514 - Drug, bio-affecting and body treating compositions (74994 patents):
    1. 514/2 - Drug, bio-affecting and body treating compositions (Peptide containing (e.g., protein, peptones, fibrinogen, etc.) DOAI) (6248 patents)
    2. 514/12 - Drug, bio-affecting and body treating compositions (25 or more peptide repeating units in known peptide chain structure) (4585 patents)
    3. 514/44 - Drug, bio-affecting and body treating compositions (Polynucleotide (e.g., RNA, DNA, etc.)) (2908 patents)
    4. 514/21 - Drug, bio-affecting and body treating compositions (Produced by or extracted from animal tissue) (2126 patents)
    5. 514/8 - Drug, bio-affecting and body treating compositions (Glycoprotein (carbohydrate containing)) (1914 patents)
    6. 514/54 - Drug, bio-affecting and body treating compositions (Polysaccharide) (1692 patents)
    7. 514/256 - Drug, bio-affecting and body treating compositions (1,3-diazines (e.g., pyrimidines, etc.)) (1473 patents)
    8. 514/18 - Drug, bio-affecting and body treating compositions (3 or 4 peptide repeating units in known peptide chain) (1296 patents)
    9. 514/23 - Drug, bio-affecting and body treating compositions (Carbohydrate (i.e., saccharide radical containing) DOAI) (1168 patents)
    10. 514/365 - Drug, bio-affecting and body treating compositions (1,3-thiazoles (including hydrogenated)) (1166 patents)
  3. 435 - Chemistry: molecular biology and microbiology (64909 patents):
    1. 435/320.1 - Chemistry: molecular biology and microbiology (VECTOR, PER SE (E.G., PLASMID, HYBRID PLASMID, COSMID, VIRAL VECTOR, BACTERIOPHAGE VECTOR, ETC.) BACTERIOPHAGE VECTOR, ETC.)) (13749 patents)
    2. 435/6 - Chemistry: molecular biology and microbiology (Involving nucleic acid) (13440 patents)
    3. 435/252.3 - Chemistry: molecular biology and microbiology (Transformants (e.g., recombinant DNA or vector or foreign or exogenous gene containing, fused bacteria, etc.)) (7641 patents)
    4. 435/69.1 - Chemistry: molecular biology and microbiology (Recombinant DNA technique included in method of making a protein or polypeptide) (7183 patents)
    5. 435/325 - Chemistry: molecular biology and microbiology (ANIMAL CELL, PER SE (E.G., CELL LINES, ETC.); COMPOSITION THEREOF; PROCESS OF PROPAGATING, MAINTAINING OR PRESERVING AN ANIMAL CELL OR COMPOSITION THEREOF; PROCESS OF ISOLATING OR SEPARATING AN ANIMAL CELL OR COMPOSITION THEREOF; PROCESS OF PREPARING A COMPOSITION CONTAINING AN ANIMAL CELL; CULTURE MEDIA THEREFORE) (6695 patents)
    6. 435/4 - Chemistry: molecular biology and microbiology (MEASURING OR TESTING PROCESS INVOLVING ENZYMES OR MICRO-ORGANISMS; COMPOSITION OR TEST STRIP THEREFORE; PROCESSES OF FORMING SUCH COMPOSITION OR TEST STRIP) (4367 patents)
    7. 435/691 - Chemistry: molecular biology and microbiology (4123 patents)
    8. 435/5 - Chemistry: molecular biology and microbiology (Involving virus or bacteriophage) (3235 patents)
    9. 435/7.1 - Chemistry: molecular biology and microbiology (Involving antigen-antibody binding, specific binding protein assay or specific ligand-receptor binding assay) (3156 patents)
    10. 435/183 - Chemistry: molecular biology and microbiology (ENZYME (E.G., LIGASES (6. ), ETC.), PROENZYME; COMPOSITIONS THEREOF; PROCESS FOR PREPARING, ACTIVATING, INHIBITING, SEPARATING, OR PURIFYING ENZYMES) (2276 patents)
  4. 248 - Supports (57833 patents):
    1. 248/309.1 - Supports (Article holding means) (2183 patents)
    2. 248/311.2 - Supports (Receptacle type) (1951 patents)
    3. 248/188.1 - Supports (Understructure) (1565 patents)
    4. 248/300 - Supports (Of sheet material) (1549 patents)
    5. 248/638 - Supports (Including vibration isolation means) (1546 patents)
    6. 248/188 - Supports (Leg attaching connections) (1461 patents)
    7. 248/562 - Supports (Including additional energy absorbing means, e.g., fluid or friction damping, etc.) (1384 patents)
    8. 248/49 - Supports (PIPE OR CABLE) (1280 patents)
    9. 248/214 - Supports (On horizontal rod or bar) (1278 patents)
    10. 248/317 - Supports (SUSPENDED SUPPORTS) (1277 patents)
  5. 257 - Active solid-state devices (e.g., transistors, solid-state diodes) (56598 patents):
    1. 257/778 - Active solid-state devices (e.g., transistors, solid-state diodes) (Flip chip) (2807 patents)
    2. 257/758 - Active solid-state devices (e.g., transistors, solid-state diodes) (Multiple metal levels on semiconductor, separated by insulating layer (e.g., multiple level metallization for integrated circuit)) (2481 patents)
    3. 257/723 - Active solid-state devices (e.g., transistors, solid-state diodes) (For plural devices) (2391 patents)
    4. 257/666 - Active solid-state devices (e.g., transistors, solid-state diodes) (LEAD FRAME) (2336 patents)
    5. 257/737 - Active solid-state devices (e.g., transistors, solid-state diodes) (Bump leads) (2282 patents)
    6. 257/296 - Active solid-state devices (e.g., transistors, solid-state diodes) (Insulated gate capacitor or insulated gate transistor combined with capacitor (e.g., dynamic memory cell)) (2216 patents)
    7. 257/787 - Active solid-state devices (e.g., transistors, solid-state diodes) (ENCAPSULATED) (2180 patents)
    8. 257/738 - Active solid-state devices (e.g., transistors, solid-state diodes) (Ball shaped) (2115 patents)
    9. 257/774 - Active solid-state devices (e.g., transistors, solid-state diodes) (Via (interconnection hole) shape) (2052 patents)
    10. 257/347 - Active solid-state devices (e.g., transistors, solid-state diodes) (Single crystal semiconductor layer on insulating substrate (SOI)) (1985 patents)
  6. 250 - Radiant energy (56483 patents):
    1. 250/208.1 - Radiant energy (Plural photosensitive image detecting element arrays) (2994 patents)
    2. 250/492.2 - Radiant energy (Irradiation of semiconductor devices) (2495 patents)
    3. 250/216 - Radiant energy (Optical or pre-photocell system) (2188 patents)
    4. 250/221 - Radiant energy (Controlled by article, person, or animal) (2115 patents)
    5. 250/306 - Radiant energy (INSPECTION OF SOLIDS OR LIQUIDS BY CHARGED PARTICLES) (2100 patents)
    6. 250/310 - Radiant energy (Electron probe type) (1814 patents)
    7. 250/307 - Radiant energy (Methods) (1775 patents)
    8. 250/281 - Radiant energy (IONIC SEPARATION OR ANALYSIS) (1542 patents)
    9. 250/234 - Radiant energy (Means for moving optical system) (1518 patents)
    10. 250/548 - Radiant energy (Controlling web, strand, strip, or sheet) (1516 patents)
  7. 427 - Coating processes (53607 patents):
    1. 427/385.5 - Coating processes (Resin, resin precursor, rubber, or hardenable oil-containing coating) (2120 patents)
    2. 427/387 - Coating processes (Silicon compound containing coating) (1900 patents)
    3. 427/248.1 - Coating processes (COATING BY VAPOR, GAS, OR SMOKE) (1678 patents)
    4. 427/407.1 - Coating processes (Synthetic resin coating) (1554 patents)
    5. 427/372.2 - Coating processes (Heating or drying (e.g., polymerizing, vulcanizing, curing, etc.)) (1543 patents)
    6. 427/131 - Coating processes (Applying superposed diverse coating or coating a coated base) (1412 patents)
    7. 427/250 - Coating processes (Metal coating) (1385 patents)
    8. 427/282 - Coating processes (Mask or stencil utilized) (1346 patents)
    9. 427/128 - Coating processes (Magnetic coating) (1298 patents)
    10. 427/162 - Coating processes (OPTICAL ELEMENT PRODUCED) (1201 patents)
  8. 340 - Communications: electrical (51770 patents):
    1. 340/438 - Communications: electrical (Internal alarm or indicator responsive to a condition of the vehicle) (2130 patents)
    2. 340/988 - Communications: electrical (VEHICLE POSITION INDICATION) (2076 patents)
    3. 340/990 - Communications: electrical (With map display) (1720 patents)
    4. 340/540 - Communications: electrical (Specific condition) (1639 patents)
    5. 340/825.69 - Communications: electrical (Radio link) (1606 patents)
    6. 340/541 - Communications: electrical (Intrusion detection) (1584 patents)
    7. 340/436 - Communications: electrical (Of collision or contact with external object) (1553 patents)
    8. 340/571 - Communications: electrical (Alarm on protected article) (1499 patents)
    9. 340/825.72 - Communications: electrical (Wireless link) (1498 patents)
    10. 340/425.5 - Communications: electrical (LAND VEHICLE ALARMS OR INDICATORS) (1472 patents)
  9. 264 - Plastic and nonmetallic article shaping or treating: processes (51660 patents):
    1. 264/257 - Plastic and nonmetallic article shaping or treating: processes (One component is a fibrous or textile sheet, web, or batt) (1970 patents)
    2. 264/255 - Plastic and nonmetallic article shaping or treating: processes (Sequential formation of portion on same mold or a preform surface) (1741 patents)
    3. 264/328.1 - Plastic and nonmetallic article shaping or treating: processes (Introducing material under pressure into a closed mold cavity (e.g., injection molding, etc.)) (1465 patents)
    4. 264/40.1 - Plastic and nonmetallic article shaping or treating: processes (WITH MEASURING, TESTING, OR INSPECTING) (1463 patents)
    5. 264/259 - Plastic and nonmetallic article shaping or treating: processes (Shaping material and uniting to a preform) (1459 patents)
    6. 264/275 - Plastic and nonmetallic article shaping or treating: processes (Positioning or maintaining position of preform relative to mold surface) (1431 patents)
    7. 264/258 - Plastic and nonmetallic article shaping or treating: processes (Joining a plurality of superposed fibrous or textile layers) (1370 patents)
    8. 264/109 - Plastic and nonmetallic article shaping or treating: processes (FORMING ARTICLES BY UNITING RANDOMLY ASSOCIATED PARTICLES) (1358 patents)
    9. 264/41 - Plastic and nonmetallic article shaping or treating: processes (PORE FORMING IN SITU (E.G., FOAMING, ETC.)) (1227 patents)
    10. 264/122 - Plastic and nonmetallic article shaping or treating: processes (Utilizing diverse solid particles) (1130 patents)
  10. 206 - Special receptacle or package (51601 patents):
    1. 206/581 - Special receptacle or package (Cosmetic or toilet) (1829 patents)
    2. 206/557 - Special receptacle or package (TRAY TYPE) (1620 patents)
    3. 206/308.1 - Special receptacle or package (For holding an optical disc (e.g., compact disc)) (1589 patents)
    4. 206/438 - Special receptacle or package (FOR BODY TREATMENT ARTICLE OR MATERIAL (I.E., "SURGICAL" OR THERAPEUTIC TYPE)) (1517 patents)
    5. 206/457 - Special receptacle or package (WITH ORNAMENTATION OR SIMULATION) (1504 patents)
    6. 206/389 - Special receptacle or package (FOR ROLL OR REEL) (1468 patents)
    7. 206/349 - Special receptacle or package (FOR A TOOL (E.G., KNIFE, SHAVER)) (1431 patents)
    8. 206/372 - Special receptacle or package (Plural) (1384 patents)
    9. 206/423 - Special receptacle or package (FOR A PLANT, FLOWER, OR TREE (INCLUDES CUT OR ARTIFICIAL)) (1382 patents)
    10. 206/509 - Special receptacle or package (Having vertical projecting element or recess for interlock) (1378 patents)
  11. 438 - Semiconductor device manufacturing: process (49549 patents):
    1. 438/637 - Semiconductor device manufacturing: process (With formation of opening (i.e., viahole) in insulative layer) (2332 patents)
    2. 438/253 - Semiconductor device manufacturing: process (Stacked capacitor) (2316 patents)
    3. 438/692 - Semiconductor device manufacturing: process (Simultaneous (e.g., chemical-mechanical polishing, etc.)) (2305 patents)
    4. 438/396 - Semiconductor device manufacturing: process (Stacked capacitor) (2265 patents)
    5. 438/14 - Semiconductor device manufacturing: process (WITH MEASURING OR TESTING) (2247 patents)
    6. 438/106 - Semiconductor device manufacturing: process (PACKAGING (E.G., WITH MOUNTING, ENCAPSULATING, ETC.) OR TREATMENT OF PACKAGED SEMICONDUCTOR) (2078 patents)
    7. 438/622 - Semiconductor device manufacturing: process (Multiple metal levels, separated by insulating layer (i.e., multiple level metallization)) (2050 patents)
    8. 438/257 - Semiconductor device manufacturing: process (Having additional gate electrode surrounded by dielectric (i.e., floating gate)) (1733 patents)
    9. 438/108 - Semiconductor device manufacturing: process (Flip-chip-type assembly) (1537 patents)
    10. 438/706 - Semiconductor device manufacturing: process (Vapor phase etching (i.e., dry etching)) (1510 patents)
  12. 361 - Electricity: electrical systems and devices (49536 patents):
    1. 361/752 - Electricity: electrical systems and devices (With housing or chassis) (2454 patents)
    2. 361/704 - Electricity: electrical systems and devices (Thermal conduction) (2429 patents)
    3. 361/56 - Electricity: electrical systems and devices (Voltage responsive) (2371 patents)
    4. 361/111 - Electricity: electrical systems and devices (Transient responsive) (2267 patents)
    5. 361/760 - Electricity: electrical systems and devices (Connection of components to board) (2215 patents)
    6. 361/683 - Electricity: electrical systems and devices (1680 patents)
    7. 361/816 - Electricity: electrical systems and devices (Shielding) (1662 patents)
    8. 361/707 - Electricity: electrical systems and devices (Through support means) (1525 patents)
    9. 361/724 - Electricity: electrical systems and devices (Cabinet-type housing) (1472 patents)
    10. 361/736 - Electricity: electrical systems and devices (With printed circuit boards) (1459 patents)
  13. 156 - Adhesive bonding and miscellaneous chemical manufacture (45938 patents):
    1. 156/245 - Adhesive bonding and miscellaneous chemical manufacture (In configured mold) (1864 patents)
    2. 156/285 - Adhesive bonding and miscellaneous chemical manufacture (Direct application of vacuum or fluid pressure during bonding) (1600 patents)
    3. 156/247 - Adhesive bonding and miscellaneous chemical manufacture (With stripping of adhered lamina) (1576 patents)
    4. 156/230 - Adhesive bonding and miscellaneous chemical manufacture (Direct contact transfer of adhered lamina from carrier to base) (1490 patents)
    5. 156/344 - Adhesive bonding and miscellaneous chemical manufacture (Delaminating, per se) (1477 patents)
    6. 156/250 - Adhesive bonding and miscellaneous chemical manufacture (With cutting, punching, tearing or severing) (1407 patents)
    7. 156/277 - Adhesive bonding and miscellaneous chemical manufacture (With printing) (1395 patents)
    8. 156/289 - Adhesive bonding and miscellaneous chemical manufacture (Utilizing parting or release material to prevent adhesion) (1369 patents)
    9. 156/242 - Adhesive bonding and miscellaneous chemical manufacture (With lamina formation by molding or casting) (1360 patents)
    10. 156/293 - Adhesive bonding and miscellaneous chemical manufacture (Inserting of lamina in hole, aperture or recess of other lamina and adherence to side walls thereof) (1301 patents)
  14. 424 - Drug, bio-affecting and body treating compositions (45478 patents):
    1. 424/401 - Drug, bio-affecting and body treating compositions (Cosmetic, antiperspirant, dentifrice) (4280 patents)
    2. 424/489 - Drug, bio-affecting and body treating compositions (Particulate form (e.g., powders, granules, beads, microcapsules, and pellets)) (3306 patents)
    3. 424/464 - Drug, bio-affecting and body treating compositions (Tablets, lozenges, or pills) (2267 patents)
    4. 424/400 - Drug, bio-affecting and body treating compositions (PREPARATIONS CHARACTERIZED BY SPECIAL PHYSICAL FORM) (2218 patents)
    5. 424/450 - Drug, bio-affecting and body treating compositions (Liposomes) (2109 patents)
    6. 424/405 - Drug, bio-affecting and body treating compositions (Biocides; animal or insect repellents or attractants (e.g., disinfectants, pesticides, etc.)) (2093 patents)
    7. 424/184.1 - Drug, bio-affecting and body treating compositions (ANTIGEN, EPITOPE, OR OTHER IMMUNOSPECIFIC IMMUNOEFFECTOR (E.G., IMMUNOSPECIFIC VACCINE, IMMUNOSPECIFIC STIMULATOR OF CELL-MEDIATED IMMUNITY, IMMUNOSPECIFIC TOLEROGEN, IMMUNOSPECIFIC IMMUNOSUPPRESSOR, ETC.)) (2090 patents)
    8. 424/59 - Drug, bio-affecting and body treating compositions (TOPICAL SUN OR RADIATION SCREENING, OR TANNING PREPARATIONS) (1879 patents)
    9. 424/451 - Drug, bio-affecting and body treating compositions (Capsules (e.g., of gelatin, of chocolate, etc.)) (1729 patents)
    10. 424/422 - Drug, bio-affecting and body treating compositions (Implant or insert) (1629 patents)
  15. 210 - Liquid purification or separation (44057 patents):
    1. 210/232 - Liquid purification or separation (WITH REPAIR OR ASSEMBLING MEANS) (2422 patents)
    2. 210/656 - Liquid purification or separation (Chromatography) (2003 patents)
    3. 210/198.2 - Liquid purification or separation (Chromatography) (1874 patents)
    4. 210/748 - Liquid purification or separation (Utilizing electrical or wave energy (directly applied to liquid or material being treated)) (1469 patents)
    5. 210/143 - Liquid purification or separation (AUTOMATIC CONTROL) (1328 patents)
    6. 210/259 - Liquid purification or separation (Diverse) (1317 patents)
    7. 210/651 - Liquid purification or separation (Removing specified material) (1305 patents)
    8. 210/282 - Liquid purification or separation (Removable cartridge or hand-manipulated container) (1276 patents)
    9. 210/416.1 - Liquid purification or separation (With pump, gas pressure, or suction source) (1275 patents)
    10. 210/747 - Liquid purification or separation (Including geographic feature (e.g., drainage ditch, septic, pond)) (1263 patents)
  16. 137 - Fluid handling (42896 patents):
    1. 137/801 - Fluid handling (FAUCETS AND SPOUTS) (1799 patents)
    2. 137/1 - Fluid handling (PROCESSES) (844 patents)
    3. 137/487.5 - Fluid handling (Electrically actuated valve) (808 patents)
    4. 137/312 - Fluid handling (WITH LEAKAGE OR DRIP COLLECTING) (773 patents)
    5. 137/884 - Fluid handling (Sectional block structure) (763 patents)
    6. 137/557 - Fluid handling (Fluid pressure responsive indicator, recorder or alarm) (711 patents)
    7. 137/554 - Fluid handling (Electrical) (623 patents)
    8. 137/606 - Fluid handling (Valve in each inlet) (599 patents)
    9. 137/240 - Fluid handling (With separate material addition) (576 patents)
    10. 137/587 - Fluid handling (Tank with gas vent and inlet or outlet) (568 patents)
  17. 280 - Land vehicles (42147 patents):
    1. 280/735 - Land vehicles (Electric control and/or sensor means) (1661 patents)
    2. 280/731 - Land vehicles (Deflated confinement located within or on steering column) (1389 patents)
    3. 280/732 - Land vehicles (Deflated confinement located in or on instrument panel) (1327 patents)
    4. 280/728.1 - Land vehicles (Inflatable passenger restraint or confinement (e.g., air bag) or attachment) (1313 patents)
    5. 280/736 - Land vehicles (With source of inflation fluid and flow control means thereof) (1285 patents)
    6. 280/806 - Land vehicles (Inertia responsive locking or tightening of belt or harness) (1283 patents)
    7. 280/741 - Land vehicles (Inflation fluid source) (1254 patents)
    8. 280/728.2 - Land vehicles (With specific mounting feature) (1139 patents)
    9. 280/650 - Land vehicles (Chair or stroller for seated occupant) (1137 patents)
    10. 280/647 - Land vehicles (Wheeled chair, stroller, or baby carriage) (1069 patents)
  18. 324 - Electricity: measuring and testing (41930 patents):
    1. 324/309 - Electricity: measuring and testing (To obtain localized resonance within a sample) (3584 patents)
    2. 324/307 - Electricity: measuring and testing (Using a nuclear resonance spectrometer system) (3534 patents)
    3. 324/765 - Electricity: measuring and testing (Test of semiconductor device) (3329 patents)
    4. 324/318 - Electricity: measuring and testing (Spectrometer components) (3141 patents)
    5. 324/158.1 - Electricity: measuring and testing (MISCELLANEOUS) (2925 patents)
    6. 324/754 - Electricity: measuring and testing (With probe elements) (2562 patents)
    7. 324/300 - Electricity: measuring and testing (PARTICLE PRECESSION RESONANCE) (2428 patents)
    8. 324/322 - Electricity: measuring and testing (Electronic circuit elements) (2230 patents)
    9. 324/537 - Electricity: measuring and testing (Of individual circuit component or element) (1475 patents)
    10. 324/755 - Electricity: measuring and testing (Internal of or on support for device under test (DUT)) (1439 patents)
  19. 455 - Telecommunications (41491 patents):
    1. 455/344 - Telecommunications (Combined with diverse art device) (2337 patents)
    2. 455/347 - Telecommunications (Cabinet, housing, or chassis structure) (2204 patents)
    3. 455/450 - Telecommunications (Channel allocation) (2073 patents)
    4. 455/436 - Telecommunications (Handoff) (2041 patents)
    5. 455/517 - Telecommunications (To or from mobile station) (1910 patents)
    6. 455/351 - Telecommunications (Transportable) (1883 patents)
    7. 455/69 - Telecommunications (Transmitter controlled by signal feedback from receiver) (1869 patents)
    8. 455/561 - Telecommunications (Base station detail) (1651 patents)
    9. 455/575 - Telecommunications (1632 patents)
    10. 455/445 - Telecommunications (Call routing (e.g., to prevent backhaul, routing efficiency, least cost, or alternate routing)) (1620 patents)
  20. 123 - Internal-combustion engines (40245 patents):
    1. 123/478 - Internal-combustion engines (Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve)) (1704 patents)
    2. 123/480 - Internal-combustion engines (Having microprocessor) (1522 patents)
    3. 123/90.15 - Internal-combustion engines (With means for varying timing) (1351 patents)
    4. 123/399 - Internal-combustion engines (Having an electrical device between input and speed regulator) (1210 patents)
    5. 123/516 - Internal-combustion engines (Air or fuel vapor purging system) (1170 patents)
    6. 123/494 - Internal-combustion engines (Having specific transducer) (1103 patents)
    7. 123/198D - Internal-combustion engines (Safety devices) (1056 patents)
    8. 123/520 - Internal-combustion engines (Purge valve controlled by engine parameter) (1046 patents)
    9. 123/90.17 - Internal-combustion engines (Camshaft or cam characteristics) (1035 patents)
    10. 123/90.16 - Internal-combustion engines (Cam-to-valve relationship) (1030 patents)
Disclaimer: data is provided as-is from the United States Patent and Trademark Office, modified for presentation purposes only.
 
 

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